4(2x-5)-7(12-3x)=21+4x

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Solution for 4(2x-5)-7(12-3x)=21+4x equation: 



4(2x-5)-7(12-3x)=21+4x

We move all terms to the left:

4(2x-5)-7(12-3x)-(21+4x)=0

We add all the numbers together, and all the variables

4(2x-5)-7(-3x+12)-(4x+21)=0

We multiply parentheses

8x+21x-(4x+21)-20-84=0

We get rid of parentheses

8x+21x-4x-21-20-84=0

We add all the numbers together, and all the variables

25x-125=0

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

25x=125

x=125/25

x=5

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