21x+4=10x-3=84

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Solution for 21x+4=10x-3=84 equation: 



21x+4=10x-3=84

We move all terms to the left:

21x+4-(10x-3)=0

We get rid of parentheses

21x-10x+3+4=0

We add all the numbers together, and all the variables

11x+7=0

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

11x=-7

x=-7/11

x=-7/11

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