1) (5/3)+(4/3)=2x
(20/9)+=2x
(2.2)=2x
2.2/2=x
1.1=x
x=1.1
2) (6/7)(3/9)+3x=4-(17/5)
3x=4+(17/5)-(6/7)(3/9)
3x=4+(3.4)-(18/63)
3x=7.4-0.28
3x=7.12
x=7.12/3=
x=2.37
3) (23/3)+(16/9)x=23x-12
(7.67)+(1.78)x=23x-12
(1.78)x-23x=-12-(7.67)
-21.22x=-19.67
19.67/-21.22=x
x=-0.92
4)12x-18+(23/7)=(145/2)-4x
12x-4x=(145/2)+18-(23/7)
8x=(72.5)+18-(3.28)
8x=90.5-(3.28)
8x=87.22
x=87.22/8
x=10.90
5)((14/2)(15/9)/(125/25)=17/3+(13/4)x
(13/4)x=17/3-((14/2)(15/9)/(125/25)
(3.25)x=5.67-210/18/125/25
(3.25)x=5.67-5250/2250
(3.25)x=5.67-2.34
(3.25)x=3.33
x=3.33/3.25
x=1.024
6)22-178+33/5-16x=147+(248/16)x
16x+15.5x=147+22+178-33/5
31.5x=147+22+178-6.6
31.5x=169+178-6.6
31.5x=347-6.6
31.5x=340.4
x=340.4/31.5
x=10.806
7)(2)(-3)(5)+25x=(147/15)x-248/43-223/105
(-6)(5)+25x=(147/15)x-248/43-223/105
(-30)+25x=(9.67)x-5.67-2.12
-2.12-5.76+(-30)=(9.67)x+25x
-7.88+(-30)=(9.67)x+25x
-37.88=34.67x
-37.88/34.67x=
x=-1.092
8)(45/7)/(198/26)+28x=13+(14/67)(22/111)
28x=13-3108/7437-1170/1386
28x=13-0.41-0.84
28x=12.59-0.84
28x=11.75
x=11.75/28
x=0.419
9)48/5+(2/3)x=1657+345
(0.67)x=1657-345-9.6
(0.67)x=1312-9.6
(0.67)x=1302.4
x=1302.4/0.67
x=1943.88
10)(2)(-5)(-7)(-8)(9)+2578996+1247-5x=951753+456
951753+456+(-5040)+257896-1247=5x
952209+(-5040)+257896-1247=5x
947169+257896-1247=5x
1205065-1247=5x
1203818=5x
1203818/5=x
x=240763.6
domingo, 20 de septiembre de 2009
domingo, 6 de septiembre de 2009
EJERCICIOS
1) 12x-(5/8)-23=11
12x=11+23+(5/8)
12x=34+0.62
12x=34.62
x=34.62/12
x=2.88
2) ((6/6)(4/9)+23x-(7/5)=(9/2)
(1)(0.45)+23x=(4.5)+(1.4)
(0.45+23)x=4.5+1.4
23.45x=5.9
x=5.9/23.45
x=0.25
3) ((18/6) /(24/17))x+25-18=65
(3) /(1.41)x=65+18-25
2.12x=65+18-25
2.12x=83-25
2.12x=58
x=58/2.12
x=27.35
4) (-2)(5)(3)+(-3)(-6)(5)+(1/2)x+4=19
(1/2)x=19-4-(-3)(-6)(5)-(-2)(5)(3)
(1/2)x=15-(-90)-(-30)
(1/2)x=105-(-30)
(1/2)x=135
x=135/0.5
x=270
5) ((19/13)(27/6)/(35/4))+22=73x
((19/13)(27/6)/(35/4)+22=73x
(6.3)(4.5)/(8.75)+22=73x
(28.35/8.75)+22=73x
3.24+22=73x
25.24=x/73
0.345=x
x=0.345
6)184x-235-6/5=212x-66
184x-212x=-66+235+6/5
-28x=169+6/5
-28x=169+1.2
-28x=170.2
x=170.2/-28
x=-6.07
7) (44/16)(2)-15x+33=45x-79+(12/16)
15x+45x=-79-(12/6)-33+(44/16)(2)
60x=-79-(12/6)-33+(44/16)(2)
60x=-79-(12/6)-33+(44/16)(2)
60x=-79-(2)-33+(2.75)(2)
60x=-158-33+(2.75)(2)
60x=-191+(2.75)(2)
60x=-188.25(2)
60x=-376.5
x=-376.5/60
x=-6.275
8) x+18
9)x(5)-4
10) 1/4x(17)
11) 1/3x
12) x/7
13) 1/4x9
14) x =36x
12x=11+23+(5/8)
12x=34+0.62
12x=34.62
x=34.62/12
x=2.88
2) ((6/6)(4/9)+23x-(7/5)=(9/2)
(1)(0.45)+23x=(4.5)+(1.4)
(0.45+23)x=4.5+1.4
23.45x=5.9
x=5.9/23.45
x=0.25
3) ((18/6) /(24/17))x+25-18=65
(3) /(1.41)x=65+18-25
2.12x=65+18-25
2.12x=83-25
2.12x=58
x=58/2.12
x=27.35
4) (-2)(5)(3)+(-3)(-6)(5)+(1/2)x+4=19
(1/2)x=19-4-(-3)(-6)(5)-(-2)(5)(3)
(1/2)x=15-(-90)-(-30)
(1/2)x=105-(-30)
(1/2)x=135
x=135/0.5
x=270
5) ((19/13)(27/6)/(35/4))+22=73x
((19/13)(27/6)/(35/4)+22=73x
(6.3)(4.5)/(8.75)+22=73x
(28.35/8.75)+22=73x
3.24+22=73x
25.24=x/73
0.345=x
x=0.345
6)184x-235-6/5=212x-66
184x-212x=-66+235+6/5
-28x=169+6/5
-28x=169+1.2
-28x=170.2
x=170.2/-28
x=-6.07
7) (44/16)(2)-15x+33=45x-79+(12/16)
15x+45x=-79-(12/6)-33+(44/16)(2)
60x=-79-(12/6)-33+(44/16)(2)
60x=-79-(12/6)-33+(44/16)(2)
60x=-79-(2)-33+(2.75)(2)
60x=-158-33+(2.75)(2)
60x=-191+(2.75)(2)
60x=-188.25(2)
60x=-376.5
x=-376.5/60
x=-6.275
8) x+18
9)x(5)-4
10) 1/4x(17)
11) 1/3x
12) x/7
13) 1/4x9
14) x =36x
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