Math

you can cross multiply.
17 m
__ = ___
15 150

15m=2550 isolate m by dividing both sides by 15

m= 2550/15
m=170

Ziharris:

17/25 = m/150

Any equality is maintained when the expressions on both sides of the equals sign are multiplied by the same number. Multiplying both sides of the original equality by 150 produces the result shown. This is the justification for cross multiplication.

Ziharris:

17/25 = m/150

First write them as proper upright fractions

Now multiply BOTH sides by 150

the 150s on the right hand side cancel each other out so you are just left with a calculation on the left hand side.