78 = - 2 (m + 3) + m

a) - 42

b) - 72

c) - 84

d) - 28

Question

Mathematics

Cleopatra

15 July, 15:10

78 = - 2 (m + 3) + m

a) - 42

b) - 72

c) - 84

d) - 28

+5

Answers (2)

Know the Answer?

Lillian Harding · Answer 1

c

Step-by-step explanation:

distribute the parenthesis and simplify

78 = - 2m - 6 + m

78 = - m - 6 (add 6 to both sides)

84 = - m (multiply both sides by - 1)

- 84 = m ⇒ m = - 84 → c

Charlie Mcintyre · Answer 2

78 = - 2m-6+m

78 = - m-6

78+6 = - m

84 = - m

m = - 84 Answer (C)

78 = - 2 (m + 3) + ma) - 42b) - 72c) - 84d) - 28

78 = - 2 (m + 3) + m

a) - 42

b) - 72

c) - 84

d) - 28