45n-15=120

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Solution for 45n-15=120 equation: 



45n-15=120

We move all terms to the left:

45n-15-(120)=0

We add all the numbers together, and all the variables

45n-135=0

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

45n=135

n=135/45

n=3

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