2x+21=64-3

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Solution for 2x+21=64-3 equation: 



2x+21=64-3

We move all terms to the left:

2x+21-(64-3)=0

We add all the numbers together, and all the variables

2x+21-61=0

We add all the numbers together, and all the variables

2x-40=0

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

2x=40

x=40/2

x=20

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