Question

How do I find x to solve the the proportion?

Answer 1

Steps

So firstly, cross-multiply the proportion:

`3x*21=7*8\\63x=56`

Next, divide both sides by 63:

`x=(56)/(63)`

Next, we need to simplify the fraction. To do this, we need to divide both the numerator and the denominator by their GCF, or greatest common factor. In this case, their GCF is 7:

`(56)/(63)/ (7)/(7)=(8)/(9)\\\\x=(8)/(9)`

Answer

In short, x = 8/9

Answer 2

you isolate the variable

Explanation:

or you can use this calculator

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