Question

Qual o valor de X?
A) x-(x+1)=12-(3x-2)
B)X=12
2 3

Answer 1

A) x - (x + 1) = 12 - (3x - 2)
x - x - 1 = 12 - 3x + 2
x - x + 3x = 12 + 2 + 1
3x = 15
x = 15/3
x = 5

B) x/2 = 12/3
x . 3 = 12 . 2
3x = 24
x = 24/3
x = 8