Ответ:
1. 13y+15y-24=60
28y=60+24
28y=84
y=84:28
y=3
2. 2-3(x+2)=5-2x
2-3x-6=5-2x
-3x+2x=-2+6+5
-x=-9
x=9
3. 3(2x-4)-2(x+3)=-2
6x-12-2x-6=-2
6x-2x=2+12+6
4x=20
x=20:4
x=5
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Answers & Comments
Ответ:
1. 13y+15y-24=60
28y=60+24
28y=84
y=84:28
y=3
2. 2-3(x+2)=5-2x
2-3x-6=5-2x
-3x+2x=-2+6+5
-x=-9
x=9
3. 3(2x-4)-2(x+3)=-2
6x-12-2x-6=-2
6x-2x=2+12+6
4x=20
x=20:4
x=5