Answer:
Step-by-step explanation:
1) a ) 4 + (-6) = -2
b) (-4) + 7 = 3
2) 5*6 + 7 = 30 + 7 = 37
5 + 6 -7 = 11 - 7 = 4
6 - 5 + 7 = 1 + 7 = 8
