Question

Решите систему уравнений! Спасибо.$left { } frac{(3x-1)}{5}+3y-4=15 atop { frac{(3y-5)}{6}+2x-8= frac{23}{3} }} right.$

Answer 1

$left { {{(3x-1)}+15y-20=75 atop {(3y-5)+12x-48=46}} right. = left { {3x+15y=96 atop {3y+12x=99} right. = left { {x+5y=32 atop {y+4x=33} right. = left { {4x+20y=128 atop {y+4x=33} right. Rightarrow \ (4x+20y)-(4x+y)=128-33 Rightarrow 19y=95 Rightarrow y=5 \ 5+4x=33 Rightarrow 4x=28 Rightarrow x=7$