3x-21*(-1/2)=15

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Solution for 3x-21*(-1/2)=15 equation: 



3x-21(-1/2)=15

We move all terms to the left:

3x-21(-1/2)-(15)=0

determiningTheFunctionDomain
3x-15-21(-1/2)=0

We multiply parentheses

3x-15+1/2*21=0

We multiply all the terms by the denominator


3x*2*21+1-15*2*21=0

We add all the numbers together, and all the variables

3x*2*21-629=0

Wy multiply elements

126x*2-629=0

Wy multiply elements

252x-629=0

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

252x=629

x=629/252

x=2+125/252

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