Respostas

2014-06-09T22:45:19-03:00
A) 10x-x=5-64

10x - x = 5 - 64
9x = -59x = -59 / 9 ( 6,5 )

E) 5x+3=48

5x + 3 = 48
5x = -3 + 48
5x = 45
x = 45 / 5x = 9

C) 5x-192=48-3x

5x - 192 = 48 - 3x
5x + 3x = 192 + 48
8x = 240
x = 30

F)2(x+5) + 3 (x-5)=5

2x + 10 + 3x - 15 = 5
2x + 3x = -10 + 15 + 5
5x = 10x = 10 / 5
x = 2

G)5(2x+7)-10+4(x-5)+9

10x + 35 - 10 + 4x - 20 + 9 = 0
10x + 4x = -35 + 10 + 20 - 9
14x = -14x = -14 / 14
x = -1