10x-30+3x+12=45

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Solution for 10x-30+3x+12=45 equation: 



10x-30+3x+12=45

We move all terms to the left:

10x-30+3x+12-(45)=0

We add all the numbers together, and all the variables

13x-63=0

We move all terms containing x to the left, all other terms to the right

13x=63

x=63/13

x=4+11/13

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