Answer:
1:
[tex] \frac{m}{8} + 15 = 20 \\ m + 120 = 160 \\ m = 160 - 120 \\ m = 40[/tex]
[tex]4 = \frac{m}{3} - 6 \\ 12 = m - 18 \\ - m = - 18 - 12 \\ - m = - 30 \\ m = 30[/tex]
44=4t+8
-4t=8-44
-4t=-36
t=9
And the last one is
15+2x=75
2x=75-15
2x=60
x=30
Hope this helps :)