X+a+19=18

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Solution for X+a+19=18 equation:



X+X+19=18
We move all terms to the left:
X+X+19-(18)=0
We add all the numbers together, and all the variables
2X+1=0
We move all terms containing X to the left, all other terms to the right
2X=-1
X=-1/2
X=-1/2

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