x+y=7
2*x*10+2*y=10*(x+2)+y+2+3
y=7-x
10x+y=25
10x+7-x=25
x=2
y=5
число 25
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Verified answer
x+y=7
2*x*10+2*y=10*(x+2)+y+2+3
y=7-x
10x+y=25
10x+7-x=25
x=2
y=5
число 25