Math!. tell me your result...muhahahaaa.. should be 27... just need to substitute so that b=10-a and c=10+a and find a by plugging it into the last formula. once youve found a you can find b and c then  Math! tell me your result muhahahaaa should be 27 just need to substitute so that b=10-a and c=10+a find a by plugging it into the last formula once youve found you can b c then