Question

Помогите срочно надо
2^x+2^y=12
x-y=1

Answer 1

2^x+2^y=12
x-y=1

2^x+2^y=12
x=1+y

2^(1+y)+2^y=12
2*2^y+2^y=12
2^y(2+1)=12
2^y=12/3
2^y=4
y=2
x=3