Question

Mim ajude a responder por favor ​

Answer 1

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

$4(x+2)=6.2x$

$4x+8=12x$

$12x-4x=8$

$8x=8$

$x=1$

$\frac{7x+5}{4} =\frac{2x}{\frac{3}{4} }$

$(7x+5).\frac{3}{4} =4.2x$

$\frac{21x+15}{4}=8x$

$21x+15=4.8x$

$21x+15=32x$

$32x-21x=15$

$11x=15$

$x=\frac{15}{11}$