1.-9z+32=7z 2.10-11n=15-12n

Question

1.-9z+32=7z
2.10-11n=15-12n

Answer 1

1)-9z+32=7z
-16z=32
z=-2

2)10-11n=15-12n
-5=-1
n=-1/5

Answer 2

2) -11n+12n=15-10
n=5
ответ:5