Answer :

geerky42
So you have unknown value (n)

n × 30 = 20

You can divide both sides by 30, to get n to be isolated;

n ×30 / 30 = 20/30

n times 30 divides 30 is same as n, because these 30s cancel each other.

So you have n = 20/30, which can be reduced to n = 2/3

So 2/3 times 30 equals 20. Hope this helps.
For this problem, you need to set up an equation.

30s=20 (s is a variable in which you are trying to find out)

Then divide each side by 30 so s will be by itself.

30s/30=20/30
s=20/30

Simplify.
s=2/3

:)

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