Системаx+y)*5)+(x-y)*3)=230 (X+y)*2)+(x-y)*7)=237

Question

Martin-86 · Accepted Answer

(x+y)*5)+(x-y)*3)=230 (x+y)*2)+(x-y)*7)=237 (x+y)*5)+(x-y)*3)=2305x+5y+3x-3y-230=08x+2y-230=0y=-4x+115 (x+y)*2)+(x-y)*7)=2379x-5y-237=09x-5*(-4x+115) -237=09x+20x-575-237=029x-812=0x=812/29x=28 8x+2y-230=08*28+2y-230=0224+2y-230=0-6+2y=0y=6/2y=3

Системаx+y)5)+(x-y)3)=230 (X+y)2)+(x-y)7)=237

Задание:

Решение: