6w-(-21)=99

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Solution for 6w-(-21)=99 equation: 



6w-(-21)=99

We move all terms to the left:

6w-(-21)-(99)=0

determiningTheFunctionDomain
6w-99-(-21)=0

We add all the numbers together, and all the variables

6w-78=0

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

6w=78

w=78/6

w=13

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