Question

calcule o valor de X de modo que:
a)2x-4=3
b)4x+2=-18

Answer 1

a) 2x=3+4
2x=7
x=7/2
x=3.5

Answer 2

A) 2x -4 = 3
2x = 3 + 4
2x = 7
x = 7/2
x = 3,5

B) 4x + 2 = -18
4x = -18 -2 
4x = -20
x = -20/4
x = -5