Ответ:
1) 4y+2= 3(10-y)
4y+2=30-3y
7y= 28
y = 4
2) 7(x-4)=5(x+4)
7x-28=5x+20
2x=48
x= 24
3)8y=2(5-y)
8y=10-2y
10y=10
y=1
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Ответ:
1) 4y+2= 3(10-y)
4y+2=30-3y
7y= 28
y = 4
2) 7(x-4)=5(x+4)
7x-28=5x+20
2x=48
x= 24
3)8y=2(5-y)
8y=10-2y
10y=10
y=1