Question

Me ajudem a resolver essas equações
5x + 3 = x +7
8x - 5= 7x +3
10x +4 = 6x +12
6x - 10 = x

Answer 1

Resposta:

a)

$5x+3=x+7\\5x-x=7-3\\4x=4\\x=\frac{4}{4} \\x=1$

b)

$8x-5=7x+3\\8x-7x=3+5\\x=8$

c)

$10x+4=6x+12\\10x-6x=12-4\\4x=8\\x=\frac{8}{4} \\x=2$

d)

$6x-10=x\\6x-x=10\\5x=10\\x=\frac{10}{5} \\x=2$