Question

Calcule a raiz das equaçoes: A) x+1+2x=10 B)3x=3=12 c) 6x=36

Answer 1

a) x + 1 + 2x = 10
3x = 10 - 1
3x = 9
x = 9/3
x = 3

b)3x - 3 = 12
3x = 12 + 3
3x = 15
x = 15/3
x = 5

c) 6x = 36
x = 36/6
x = 6