For the top: 10(4-7), distribute the 10 to both 4 and -7
10(4) = 40
10(-7) = -70
For the bottom, - is the same as - 1
Distribute -1 to both 4 and -1
-1(4) = -4
-1(-1) = 1
(40 - 70)/(-4 + 1)
Simplify. combine the terms.
40 - 70 = -30
-4 + 1 = -3
Divide:
-30/-3 = 10
D. 10 is your answer
hope this helps
