Question

Уравнения 10-11n=15-12n,35-11m=3m+21,15-8x=2-9x,-9x+32=7z

Answer 1

1)10-11n=15-12n
-11n+12n=15-10
n=5
2)35-11m=3m+21
-11m-3m=21-35
-14m=-14
m=1
3)15-8x=2-9x
-8x+9x=2-15
x=-13
4)-9x+32=7x
-9x-7x=-32
x=2