3.4(12+x)=21

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Solution for 3.4(12+x)=21 equation: 



3.4(12+x)=21

We move all terms to the left:

3.4(12+x)-(21)=0

We add all the numbers together, and all the variables

3.4(x+12)-21=0

We multiply parentheses

3.4x+40.8-21=0

We add all the numbers together, and all the variables

3.4x+19.8=0

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

3.4x=-19.8

x=-19.8/3.4

x=-5+2.8/3.4

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