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sabina200313
@sabina200313
August 2022
1
4
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реши уравнение
-3.4a+2.6+a=0.6-a
14+b=3b-b
3.8-m+5.2=3m-19
4*(m-2)-12=36-4m
3*(x+1)=2*(1-x)+6
2*(7-2y)=23+3*(6-y)
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fanfa
1)-3.4a+2.6+a=0.6-a
-2.4a+a=0.6-2.6
-1.4a=-2 (умножаем на 10)
a=10/7 (этот знак / деление (дробь))
2)
14+b=3b-b
14=2b-b
b=14
3)
3.8-m+5.2=3m-19
9-m=3m-19
-m-3m=-9-19
-4m=-28
m=7
4)
4*(m-2)-12=36-4m
4m-8-12=36-4m
8m=56
m=7
5)
3*(x+1)=2*(1-x)+6
3x+3=2-2x+6
5x=5
x=1
6)
2*(7-2y)=23+3*(6-y)
14-4y=23+18-3y
-y=27
y=-27
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Answers & Comments
-2.4a+a=0.6-2.6
-1.4a=-2 (умножаем на 10)
a=10/7 (этот знак / деление (дробь))
2)14+b=3b-b
14=2b-b
b=14
3)3.8-m+5.2=3m-19
9-m=3m-19
-m-3m=-9-19
-4m=-28
m=7
4)4*(m-2)-12=36-4m
4m-8-12=36-4m
8m=56
m=7
5)3*(x+1)=2*(1-x)+6
3x+3=2-2x+6
5x=5
x=1
6)2*(7-2y)=23+3*(6-y)
14-4y=23+18-3y
-y=27
y=-27