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ilia107
@ilia107
August 2022
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СРОЧНО НУЖНО РЕШИТЬ!!!!!!!!!!!!!!!!!! 25 баллов!!!
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Answers & Comments
MilkaS1
1) 2(a -1) +5(8-a)-3(2a-3)=2
2a -2+40-5a-6a+9=2
-9a+47=2
-9a=2-47
-9a=-45
a=5
2)y(y+5)-2(4-y²)+(4-3y)y=28
y²+5y-8+2y²+4y-3y² = 28
0+9y-8=28
9y-8=28
9y=28+8
9y = 36
y=4
3)
+5 =
2(4x-3)+30=x-18
8x-6+30=x-18
8x+24=x-18
8x-x=-18-24
7x=-42
x = -6
1 votes
Thanks 2
Никитаспорт
Изи
FACEGUCCI1
2 а-2+40-5а-6а+9=2
-11а+47=2
а=-5
0 votes
Thanks 0
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Answers & Comments
2a -2+40-5a-6a+9=2
-9a+47=2
-9a=2-47
-9a=-45
a=5
2)y(y+5)-2(4-y²)+(4-3y)y=28
y²+5y-8+2y²+4y-3y² = 28
0+9y-8=28
9y-8=28
9y=28+8
9y = 36
y=4
3) +5 =
2(4x-3)+30=x-18
8x-6+30=x-18
8x+24=x-18
8x-x=-18-24
7x=-42
x = -6
-11а+47=2
а=-5