Question

Observe o exemplo e resolva as equações





PESSOAL PRESISSO Q VCS NE AJUDEM PQ PRESISSO ENTREGAR HJ:)​

Answer 1

Resposta:

a) x=2  b) x= 8  c) x=-12  d) x= 6/25

Explicação passo-a-passo:

a) $\frac{x}{2} -\frac{x}{4} = \frac{1}{2}$

$\frac{4x-2x}{8} =\frac{4}{8}\\\\4x-2x=4\\2x=4\\x=\frac{4}{2} \\x=2$

b)

$\frac{x}{4} +7=\frac{x}{2} +5\\\\\frac{2x+56}{8} =\frac{4x+40}{8} \\\\2x+56=4x+40\\56-40=4x-2x\\16=2x\\x=\frac{16}{2} \\x=8$

C)

$\frac{x}{6} +\frac{x}{4} =\frac{x}{3} -1\\\\\frac{2x+3x}{12} =\frac{4x-12}{12} \\\\2x+3x=4x-12\\\\2x+3x-4x=-12\\\\\\x=-12$

d)

$\frac{5x}{3} -\frac{2}{5} =0\\\\\frac{25x-6}{15} =\frac{0}{15} \\\\25x-6=0\\\\25x=6\\\\\\x=\frac{6}{25}$

Espero ter ajudado :)