90x+300=12300-30x

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Solution for 90x+300=12300-30x equation:



90x+300=12300-30x
We move all terms to the left:
90x+300-(12300-30x)=0
We add all the numbers together, and all the variables
90x-(-30x+12300)+300=0
We get rid of parentheses
90x+30x-12300+300=0
We add all the numbers together, and all the variables
120x-12000=0
We move all terms containing x to the left, all other terms to the right
120x=12000
x=12000/120
x=100

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