21+8x=10x+7

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Solution for 21+8x=10x+7 equation: 



21+8x=10x+7

We move all terms to the left:

21+8x-(10x+7)=0

We get rid of parentheses

8x-10x-7+21=0

We add all the numbers together, and all the variables

-2x+14=0

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

-2x=-14

x=-14/-2

x=+7

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