Question

Resolva as equaçoes me ajude é pra hj!!!

e)36+4 x =2 x +64 f)3 x +15=2 x -90 g)8 x +30=42-4x h)-3 x -2=5+2 x

me ajude por favor!!!

Answer 1

e) 36 + 4x = 2x + 64

4x - 2x = 64 - 36
2x = 28
x = 28/2
x = 14
.
.
.
f) 3x + 15 = 2x - 90

3x - 2x = -90 - 15
x = -105
.
.
.
g) 8x + 30 = 42 - 4x

8x + 4x = 42 - 30
12x = 12
x = 12/12
x = 1
.
.
.
h) -3x - 2 = 5 + 2x

-3x - 2x = 5 + 2
-5x = 7 . (-1)
x = -7/5