Пж даю 40 бл.Пж помогите пожалуйста решить..... Created by mnika304. algebra-ru

Пж даю 40 бл.Пж помогите пожалуйста решить...

mnika304 @mnika304

August 2022 1 12 Report

Пж даю 40 бл.Пж помогите пожалуйста решить....

Answers & Comments

Universalka

Verified answer

$1)\left \{ {{5(x-2)+7=9+4x} \atop {4(x-y)-5y=39}} \right.\\\\\left \{ {{5x-10+7=9+4x} \atop {4x-4y-5y=39}} \right.\\\\\left \{ {{5x-4x=9+3} \atop {4x-9y=39}} \right. \\\\\left \{ {{x=12} \atop {9y=4x-39}} \right.\\\\\left \{ {{x=12} \atop {9y=4*12-39}} \right.\\\\\left \{ {{x=12} \atop {9y=9}} \right. \\\\\left \{ {{x=12} \atop {y=1}} \right.\\\\Otvet:\boxed{(12 \ ; \ 1)}$

$2)\left \{ {{\frac{1}{3}(x-y)=4 } \atop {\frac{1}{4}(x+y)=2 }} \right. \\\\\left \{ {{\frac{1}{3}(x-y)=4|*3 } \atop {\frac{1}{4}(x+y)=2 }|*4} \right.\\\\+\left \{ {{x-y=12} \atop {x+y=8}} \right.\\------\\ 2x=20\\\\x=10\\\\y=8-x=8-10=-2\\\\Otvet:\boxed{(10 \ ; \ -2)}$

0 votes Thanks 1

mnika304 ДЯКУЮ

Answers & Comments

Verified answer

pzh ochen nadodayu 40 blpzhpzhzhppzh

help dayu 40 blpzh rozpishiteya ne znayu kak eto delatpzh ochen proshu

dopomozhit pzhdayu 40 blpzh ochen proshu

pzh dopomozhitdayu 40 blochen proshu vas

pzhpzh ochen nadoochen proshu

pzh dopomozhit ya fotografiyu vam pokazuyu bud laska ya duzhe proshudayu 40 bl

dopomozhit meni bud laska dayu 40 baliv bud laskaya ne znayu yak ce robiti

рекомендуемые вопросы

Helpful Links

Helpful Social