Question

determine o valor de x:
a) 5x - 4 = 2x + 11
b) -9 + 6x = 30
c) 25 + 110x = 225
d) 8  + 4x = - 28
​

Answer 1

Resposta:

A)5x-4 = 2x+11

5x-2x = 11+4

3x = 15

X = 15/3

X = 5

B) -9+6x = 30

6x = 30+9

6x = 39

X = 39/6

X = 6,5

C)25+110x = 225

110x = 225 - 25

110x = 200

X = 200/ 110

X = 1,81

D) 8+4x = -28

4x = -28-8

4x = -36

X = -36/4

X = -9

Espero ter ajudado :3