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30 x what will equal 100

User Amna Ahmed
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1 Answer

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So we have 30 times some number is equal to 100. You could say 30 × ? = 100, or in a more math-y way,
30x=100, where x is the number we're trying to find (not to be confused with the times sign). To find x, we need to isolate it (get it alone).

For
30x=100, we divide both sides of the equation by 30.


(30x)/(30)= (100)/(30)

On the left side, the 30's cancel, so we get
x = (100)/(30), but we're not done. We need to simplify this fraction.

We can rewrite the fraction with common factors in mind, like

((10)(10))/((3)(10))= (10)/(3).
With more practice, this will seem more automatic to you.
This fraction is now in simplest form, so our final answer is

x = (10)/(3)
User Biovisualize
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