Question

1) -8=4 +12a

2) x ➗ 4 -21=-56


3) 4 posters cost $7.40. if each poster costs the same, how much dose each poster cost?

Answer 1

1) a= -1
2) x= -140
3) each poster costs $1.85

Answer 2

Answers:

1) -8 = 4 + 12a

-8 - 4 = 12a
-12 = 12a
-12/12 = a
-1 = a

a = -1 (Answer)

2) x/4-21 = -56

x= -56(4-21)
x= -224 + 1176

x = 952 (Answer)

3) 4 posters cost $7.40

7.40/4 = $1.85

Each poster costs $1.85 (Answer)