y-x=7 x=y-7
3^x*3^(2*(y-1))=27
3^(x+2*(y-1))=3³
x+2y-2=3
x+2y=5
y-7+2y=5
3y=12 |÷3
y=4 ⇒
x=4-7
x=-3.
Ответ: x=-3 y=4.
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y-x=7 x=y-7
3^x*3^(2*(y-1))=27
3^(x+2*(y-1))=3³
x+2y-2=3
x+2y=5
y-7+2y=5
3y=12 |÷3
y=4 ⇒
x=4-7
x=-3.
Ответ: x=-3 y=4.