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-6.9=-2.1+w/3
We move all terms to the left:
-6.9-(-2.1+w/3)=0
We add all the numbers together, and all the variables
-(w/3-2.1)-6.9=0
We get rid of parentheses
-w/3+2.1-6.9=0
We multiply all the terms by the denominator
-w+(2.1)*3-(6.9)*3=0
We add all the numbers together, and all the variables
-1w-14.4=0
We move all terms containing w to the left, all other terms to the right
-w=14.4
w=14.4/-1
w=-14+0.4/1
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