Question

calcule o valor de x
A) (2x+2)= 4
7
B) 0.5x - 9= 1.5​

Answer 1

a) 2x + 2 = 4

2x = 4 - 2

x = 2/2

x = 1

b) 0,5x - 9 = 1,5

0,5x = 1,5 + 9

x = 10,5/0,5

x = 21