x-19=-x+21

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



x-19=-x+21
We move all terms to the left:
x-19-(-x+21)=0
We add all the numbers together, and all the variables
x-(-1x+21)-19=0
We get rid of parentheses
x+1x-21-19=0
We add all the numbers together, and all the variables
2x-40=0
We move all terms containing x to the left, all other terms to the right
2x=40
x=40/2
x=20

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