Question

Gnt ajuda aí colegas

Answer 1

Resposta:

h) $x=12$        i) $x=\frac{8}{5}$      j) $x=6$

Explicação passo a passo:

h) $\frac{5x}{6} -\frac{3x}{4} =1$

$\frac{5x}{6}.(6) -\frac{3x}{4}.(6) =1.(6)$

$5x -\frac{18x}{4} =6$

$5x.(4) -\frac{18x}{4}.(4) =6.(4)$

$20x -18x =24$

$2x =24$

$x=\frac{24}{2}$

$x=12$

i) $x+\frac{3x}{2} =4$

$x.(2)+\frac{3x}{2}.(2) =4.(2)$

$2x+3x =8$

$5x=8$

$x=\frac{8}{5}$

j) $\frac{x}{2} +\frac{x}{3} =5$

$\frac{x}{2}.(2) +\frac{x}{3}.(2) =5.(2)$

$x+\frac{2x}{3} =10$

$x.(3)+\frac{2x}{3}.(3) =10.(3)$

$3x+2x =30$

$5x=30$

$x=\frac{30}{5}$

$x=6$