3(2x-7)+4(x+3)=21

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Solution for 3(2x-7)+4(x+3)=21 equation: 



3(2x-7)+4(x+3)=21

We move all terms to the left:

3(2x-7)+4(x+3)-(21)=0

We multiply parentheses

6x+4x-21+12-21=0

We add all the numbers together, and all the variables

10x-30=0

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

10x=30

x=30/10

x=3

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