21x/15=x-12

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Solution for 21x/15=x-12 equation: 



21x/15=x-12

We move all terms to the left:

21x/15-(x-12)=0

We get rid of parentheses

21x/15-x+12=0

We multiply all the terms by the denominator


21x-x*15+12*15=0

We add all the numbers together, and all the variables

21x-x*15+180=0

Wy multiply elements

21x-15x+180=0

We add all the numbers together, and all the variables

6x+180=0

We move all terms containing x to the left, all other terms to the right

6x=-180

x=-180/6

x=-30

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