Question

CРОЧНО,ПОЖАЛУЙСТА!!!!!!!!!!!!!!УПРАСТИТЕ ВЫРАЖЕНИЯ:
3c+a/4c - a-7c/4c
2p/p+3 + 3-p/p+3
x^2/x-4 + 4x/4-x
m/m^2-n^2 - n/m^2-n^2

Answer 1

$frac{3c+a}{4c} - frac{a-7c}{4c} = frac{10c}{4c} =2.5 \\ frac{2p}{p+3} + frac{3-p}{p+3} = frac{p+3}{p+3} =1 \\ frac{x^2}{x-4} + frac{4x}{4-x} = frac{x^2}{x-4} - frac{4x}{x-4} =x \\ frac{m}{m^2-n^2} - frac{n}{m^2-n^2} = frac{1}{m+n}$