Question

efetue:
a) 2x -3 =4
b) 5x +4 = -11
c) -x + 2x ​

Answer 1

Resposta:

a) 2x - 3 = 4

2x - 3 + 3 = 0

2x = 4 + 3

2x = 7

x = 7:2

x = 7/2

b) 5x + 4 = - 11

5x + 4 - 4 = 0

5x = - 11 - 4

5x = - 15

x = - 15:5

x = - 3