Me falem essa
A)7x+12=2x+2
B)150x+800=50x-200
C)3x+80=-6x-1
D)2x+300=7x+200
E)3x+20=9x-16
Me responde essa?
Elton324:
F)9x+20-13x=-2x+80
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A)7x+12=2x+2
7x - 2x = 2 - 12
5x = - 10
x = - 10/ 5
x = -2
B)150x+800=50x-200
150x - 50x = - 200 - 800
100x = - 1000
x = -1000/100
x = - 10
C)3x+80=-6x-1
3x + 6x = - 1 - 80
9x = - 81
x = - 81/9
x = - 9
D)2x+300=7x+200
300 - 200 = 7x - 2x
100 = 5x
5x = 100
x = 100/5
x = 20
E)3x+20=9x-16
20 + 16 = 9x - 3x
36 = 6x
6x = 36
x = 36/6
x = 6
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