Step-by-step explanation:
Assuming:
[tex] \frac{3m}{5} + a = b[/tex]
subtract a from both sides
[tex] \frac{3m}{5} = b - a[/tex]
multiply both sides by 5
[tex]3m = 5(b - a)[/tex]
divide both sides by 3
[tex]m = \frac{5(b - a)}{3} [/tex]
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if,
[tex] \frac{3m}{5 + a} = b[/tex]
multiply both sides by (5+a), then divide both sides by 3
[tex]m = \frac{b(5 + a)}{3} [/tex]