-3x+21=3(x-5)

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Solution for -3x+21=3(x-5) equation:



-3x+21=3(x-5)
We move all terms to the left:
-3x+21-(3(x-5))=0
We calculate terms in parentheses: -(3(x-5)), so:
3(x-5)
We multiply parentheses
3x-15
Back to the equation:
-(3x-15)
We get rid of parentheses
-3x-3x+15+21=0
We add all the numbers together, and all the variables
-6x+36=0
We move all terms containing x to the left, all other terms to the right
-6x=-36
x=-36/-6
x=+6

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