Question

determine o valor de x

a)-2x-5=5
b)-3x+2= -2x+2
c)4x-10=+2x-4
d)10x-8= -10x+12

Answer 1

Resposta:

a)-2x-5=5

-2x = 5 + 5

-2x = 10

x = 10/-2

x = - 5

b)-3x+2= -2x+2

3x +2x = 2 - 2

5x = 0

x = 0

c)4x-10=+2x-4

4x - 2x = - 4 + 10

2x = 6

x = 6/2

x = 3

d)10x-8= -10x+12

10x + 10x = 12 + 8

20x =20

x =20/20

x = 1

Explicação passo a passo: