Question

resolva as equações

a) 5(x+3)=18
b) 7x-1=13
c) 6x=2x+28
d) 6x-10=2x+14
e) 12x-4=10x+3

Answer 1

a) 5(x + 3) = 18
5x + 15 = 18
5x = 18 - 15
5x = 3
x = 3/5
x = 0,6

b) 7x - 1 = 13
7x = 13 + 1
7x = 14
x = 14/7
x = 2

c) 6x = 2x + 28
6x - 2x = 28
4x = 28
x = 28/4
x = 7

d) 6x - 10 = 2x + 14
6x - 2x = 14 + 10
4x = 24
x = 24/4
x = 6

e) 12x - 4 = 10x + 3
12x - 10x = 3 + 4
2x = 7
x = 7/2
x = 3,5

Espero ter ajudado