1. suppose a and b are real numbers where a > 0 and b < 0.
a. is –a + b positive or negative. explain how you know.
b. is a – b positive or negative? explain how you know.
c. is b – a positive or negative. explain how you know.

A is positive and b is negative from the info that they tell us
a. negative
a has to be negative because of the sign and b is going to be negative, so there is no way that there is going to be a positive if both are negative
b. positive
a is going to be positive because it says it in the beginning sentence it is and two negatives from the equation and b make a positive, so it is two positives
c. negative
b is negative and a is negative from the sign in the equation which make two negatives

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