Question

Resolva as equações de 1 grau

A)7x+11=31-3x

B)5(x+6)+8=1-2(x-1)

Answer 1

A)
7x + 11 = 31 - 3x
7x + 3x = 31 - 11
10x = 20
x = 20/10
x = 2


B)
5(x+6) + 8 = 1 - 2(x-1)
5x + 30 + 8 = 1 -2x + 2
5x + 2x = 1 + 2 - 30 - 8
7x = -35
x = -35/7
x = -5