5x+7x+3x=225

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Solution for 5x+7x+3x=225 equation: 



5x+7x+3x=225

We move all terms to the left:

5x+7x+3x-(225)=0

We add all the numbers together, and all the variables

15x-225=0

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

15x=225

x=225/15

x=15

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