Step by step
The question
Question: solve x/3 = 4.
x3 = 4
1 Remove the fraction
The bottom number is 3.
Times 3 will remove it.
We multiply every part by 3.
We do it on both sides.
Why both sides?
The = sign means both sides are the same amount.
If we change only one side, they are not the same any more.
3 divided by 3 is 1.
Write what is left.
x = 3 × 4
Do the multiplications.
No more fractions!
x = 12
So x = 12!
2 Check
Let's check: put 12 in place of x.
Check: 123 = 4
We get 4, the same as the right side.
So x = 12 is right!
Let's look back.
First: remove the fraction.
Last: check.
Answer
x = 12