Answer:
x=m+3b
Explanation:
Hi there!
Our goal to make x the subject of the formula is to isolate x on one side and have everything else on the other side
here's the given formula:
m=x-3b
-3b is on the same side as x, which we don't want
add 3b to both sides (-3b+3b=0)
m=x-3b
+3b +3b
________
m+3b=x
since x is now the subject of the formula, we're done
Hope this helps!