Question

Решите пожалуйста!!!

Answer 1

$27x-28=29x-32 \ 27x-29x=-32+28 \ -2x=-4 \ x=2 \ \ -3(4x-8)=4(7x+9) \ -12x+24=28x+36 \ -12x-28x=36-24 \ -40x=12 \ x=-0.3 \ \ 17-(18x+42)=12x+(15-10x) \ \ 17-18x-42=12x+15-10x \ -18x-12x+10x=15-17+42 \ -20x=40 \ x=-2$

$frac{7}{10}x+ frac{8}{9}= frac{5}{8}x- frac{5}{6} \ frac{7}{10}x- frac{5}{8}x =- frac{5}{6}- frac{8}{9} \ frac{28x-25x}{40}= frac{-30-32}{36} \ frac{3x}{40}=- frac{62}{36} \ x=-22 frac{26}{27} \ \ frac{4x-5}{3}= frac{11-9x}{5} \ 5(4x-5)=3(11-9x) \ 20x-25=33-27x \ 47x=58 \ x=1.234 \ \ 16x+18=(11+9x)(-2) \ 16x+18= -22-18x \ 34x=-40 \ x=-1 frac{6}{34}$