Question

a resposta das equaçoes 28+3x-35=-21-4x a outra e 6x+ 36+12=-6x-48 a outra e -4x+45=5x-27

Answer 1

Ola Leticia

a)

28 + 3x -35 = -21 - 4x

3x + 4x = -21 - 28 + 35

7x = -49 + 35 

7x = -14

x = -2 

b)

-4x + 45 = 5x - 27

5x + 4x = 45 + 27

9x = 72

x = 8 

Answer 2

Olá,

28+3x-35 = -21-4x
28-35+3x = -21-4x
-7+3x = -21-4x
3x+4x = -21+7
7x = -14
x = -14/7
x = -2

6x+36+12 = -6x-48
6x+48 = -6x-48
6x+6x = -48-48
12x = -96
x = -96/12
x = -8

-4x+45 = 5x-27
-4x-5x = -27-45
-9x = -72
x = -72/-9
x = 8