Question

СРОЧНО! Помогите, пожалуйста!
{10x=8y
{5x-6=3y+2

Answer 1

$left{begin{array}{ccc}10x=8y;;;;;;;;;;;;;;;;;;\5x-6=3y+2;;|cdot2end{array}right Longleftrightarrow;;left{begin{array}{ccc}10x=8y;;;;;;;;;;;;;;\10x-12=6y+4end{array}right\\\left{begin{array}{ccc}10x=8y;;;;;;;;;;;;;;\10x-12=6y+4end{array}right;Longleftrightarrow;;left{begin{array}{ccc}10x=8y;;;;;;;;;;;;;\8y-12-6y=4end{array}right$

$displaystyle8y-12-6y=4\2y-12=4\2y=16\\y=frac{16}2\\y=8\\10x=8y\10x=8cdot8\10x=64\\x=frac{64}{10}\\x=6,4$

Ответ: (6,4; 8)