Question

Помогите с алгеброй
!!!

Answer 1

$1)2b+ frac{5a+-2b^2}{b} = frac{2b^2}{b} + frac{5a+-2b^2}{b}= frac{2b^2+5a-2b^2}{b}= frac{5a}{b } \ a=6, b=-60, frac{5*6}{-60} = -frac{30}{60}=- frac{1}{2}=-0,5 \ 2) 7b+ frac{2a-7b^2}{b} = frac{7b^2}{b}+ frac{2a-7b^2}{b}=frac{7b^2+2a-7b^2}{b}= frac{2a}{b} \ a=9, b=12, frac{2a}{b}=frac{2*9}{12}= frac{18}{12}= frac{3}{2}=1,5 \ 3)8a- frac{8a^2-3c}{a} = frac{8a^2}{a}- frac{8a^2-3c}{a}= frac{8a^2-8a^2+3c}{a}= frac{3c}{a} \ a=15, c=12, frac{3*12}{15}= frac{12}{5} =2,4$