Question

solve and verify the equation

Answer 1

$\frac{2-7x}{1-5x}= \frac{3+7x}{4+5x}$
=(4+5x)(2-7x)=(1-5x)(3+7x)
8-28x+10x-35x2=3+7x-15x-35x2
-18x+8=-8x+3
8-3=10x
5=10x
x=1/2