Question

a) 5x - 2x = 2x + 33
b) 6x + 10 = 3x - 5
c) 10x - 81 = x + 9
d) x + 7 = - 3x + 28

Answer 1

Resposta:

a) 5x-2x = 2x+33

3x-2x=33

x=33

b)6x+10= 3x-5

6x-3x=-5-10

3x=-15

x=-15/3

x=-5

c)10x-81= x+9

10x-x = 9+81

9x=90

x=90/9

x=10

d)x+7= -3x+28

x+3x=28-7

4x=21

x=21/4

x=5,25