21x-10+21x-10=19x+19x

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Solution for 21x-10+21x-10=19x+19x equation: 



21x-10+21x-10=19x+19x

We move all terms to the left:

21x-10+21x-10-(19x+19x)=0

We add all the numbers together, and all the variables

21x+21x-(+38x)-10-10=0

We add all the numbers together, and all the variables

42x-(+38x)-20=0

We get rid of parentheses

42x-38x-20=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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