Question

10-11n=15-12n


-9z+32=7z

25-12m-45-8m
Решить

Answer 1

-11п+12п=15-10
п=5

-9z-7z=-32
-16z= -32
z= -32:(-16)
z=2

-12m-8m+25-45= -20m-20= -20*(m+1)