420/20=x/15

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Solution for 420/20=x/15 equation:



420/20=x/15
We move all terms to the left:
420/20-(x/15)=0
We add all the numbers together, and all the variables
-(+x/15)+420/20=0
We add all the numbers together, and all the variables
-(+x/15)+21=0
We get rid of parentheses
-x/15+21=0
We multiply all the terms by the denominator
-x+21*15=0
We add all the numbers together, and all the variables
-1x+315=0
We move all terms containing x to the left, all other terms to the right
-x=-315
x=-315/-1
x=+315

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