3(x=5)=21-4(x=5)

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Solution for 3(x=5)=21-4(x=5) equation: 



3(x=5)=21-4(x=5)

We move all terms to the left:

3(x-(5))=0

We multiply parentheses

3x-15=0

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

3x=15

x=15/3

x=5

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