Question

Dadas as equações abaixo, determine o valor de x. a) 9x + 12 = 57 b) 6x - 6 = 18 c) 7x + 10 = 31 d) 10x - 10 = 10 e) 8x + 5 = 6x + 25 f) 18x - 4 = 12x + 8

Answer 1

Resposta:

a) 9x= 57-12
9x= 45
x= 45/9
x= 5

b) 6x= 18+6
6x= 24
x= 24/6
x= 4

c)7x= 31-10
7x= 21
x= 21/7
x= 3

d) 10x= 10+10
10x= 20
x= 20/10
x= 2

e) 8x-6x= -5
2x= -5
x= -5/2
x= -2,5

f)18x-12x= 8+4
6x= 12
x= 12/6
x= 2