G = 7 + (-6) G = 1; Y = -8 + 12 Y = 4; R = -7 + 5 R = -2; Notice that in problem Y = -8 + 12 it is not necessary to put the -8 in parenthesis. But in problem G = 7 + (-6) it was. This is to avoid confusion. If we write G = 7 + -6 people might wonder is it a typo, a negative number or a subtraction problem.
Remember the rule when adding numbers: If one number is positive and the other negative, find the difference between the numbers and bring over the sign of the larger number. return