Question

ME AJUDEM!


A)2-3X=-9-4X                  B) 350X-500=100x + 750                              C)x + 5,41 = 3,87

D)3(2x-1)=-2(x+3)               E)4(x+10)-2(x-5) = 0              F)3,5x+8=2(x+7)

Answer 1

A) 2-3x = -9-4x
-3x +4x = -9-2
x = 11

B) 350x - 500 = 100x + 750
350x - 100x = 750 + 500
250x = 1250
x = 1250/250
x = 5

C) x + 5,41 = 3,87
x = 3,87 - 5,41
x = -1,54

D) 3 (2x -1) = -2 (x +3)
6x -3 = -2x -6
6x +2x = -6 +3
8x = -3
x = -3/8
x = 0,375

E) 4 (x +10) -2 (x -5) = 0 
4x +40 -2x +10 = 0
4x -2x = -40 -10
2x = -50
x = -50/2
x = -25

F) 3,5x +8 = 2 (x +7)
3,5x +8 = 2x +14
3,5x -2x = 14 -8
1,5x = 6
x = 6/1,5
x = 4