2w+21=87

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Solution for 2w+21=87 equation: 



2w+21=87

We move all terms to the left:

2w+21-(87)=0

We add all the numbers together, and all the variables

2w-66=0

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

2w=66

w=66/2

w=33

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