Please show me how to do the check from 1 2 3

Answer:
m=0.9
z=7
x=12
hope this help
and pls brainiest
Step-by-step explanation:
Pls brainiest
4m/2-3=m/3
4m-3=m/3 *2
12m-9=2m
10m=9
m=0.9
z+4/6 +z=10
z+4+6z=60
7z=56
z=7
3x/4 -2x/3=1
3x-2x/3*4=4
9x-8x=12
x=12