3x-15=3(30)-15=75

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Solution for 3x-15=3(30)-15=75 equation: 



3x-15=3(30)-15=75

We move all terms to the left:

3x-15-(3(30)-15)=0

We add all the numbers together, and all the variables

3x-15-315=0

We add all the numbers together, and all the variables

3x-330=0

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

3x=330

x=330/3

x=110

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