Question

Me ajudem a Resolver as equações

Answer 1

Resposta:

a)

$3x + 2 = x + 6\\3x - x = 6 - 2\\2x = 4\\x = \frac{4}{2}$

$x = 2$

b)

$\frac{b}{6}+ \frac{b}{4}= \frac{b}{2}-3$

$\frac{2b+3b}{12}=\frac{b-6}{2}$

$\frac{2b+3b}{12}=\frac{b-6}{2}.(6)$

$\frac{2b+3b}{12}=\frac{6b-36}{12}$

$2b+3b = 6b -36\\5b - 6b = -36\\-b = -36 .(-1)\\b = 36$

c)

$3(2x - 1) = -2(x + 4)\\6x - 3 = -2x - 8\\6x + 2x = -8 +3\\8x = -5 \\x =- \frac{5}{8}$