Answer: 9
Step-by-step explanation:
First, you substitute the -6 and -7 for x and y. 2(-6) - 3(-7). Then, you do the first part of the equation: 2(-6)= -12. Then do the second part -3 (-7) which is 21 (remember positive x positive = positive). Then you are left with -12+ 21 which is 9.
