15+15+15=x

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Solution for 15+15+15=x equation:



15+15+15=x
We move all terms to the left:
15+15+15-(x)=0
We add all the numbers together, and all the variables
-1x+45=0
We move all terms containing x to the left, all other terms to the right
-x=-45
x=-45/-1
x=+45

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