АЛГЕБРА 8КЛАСС ПОМОГИ. Created by venetacan. algebra-ru

Ответ:1) y=82 )y=-13) y= 4) y=3Объяснение:1) y+4=12=>y=12-4=>y=82)y(y-2)=y+3=>-2y=y+3=>=y+3+2y=>=(3y+3)→3y=-3→y=-13)3y+7=5=>3y=5-7=>y=4) y(y+5)=3y+15=>y(y+5)=3(y+5)=>y=3

АЛГЕБРА 8КЛАСС ПОМОГИ...

venetacan @venetacan

July 2022 1 8 Report

АЛГЕБРА 8КЛАСС ПОМОГИ

Answers & Comments

Enzer1766

Ответ:

1) y=8

2 )y=-1

3) y= $\frac{-2}{3}$

4) y=3

Объяснение:

1) y+4=12=>y=12-4=>y=8

2)y(y-2)=y+3=> $y^{2}$ -2y=y+3=> $y^{2}$ =y+3+2y=> $y^{2}$ =(3y+3)→3y=-3→y=-1

3)3y+7=5=>3y=5-7=>y= $\frac{-2}{3}$

4) y(y+5)=3y+15=>y(y+5)=3(y+5)=>y=3

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