2x-21+4x+15=180

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Solution for 2x-21+4x+15=180 equation: 



2x-21+4x+15=180

We move all terms to the left:

2x-21+4x+15-(180)=0

We add all the numbers together, and all the variables

6x-186=0

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

6x=186

x=186/6

x=31

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