Question

1. 7a x 8 =168 2. 7+ 2a =23 3. 6c + 8c =28

Answer 1

Answer:

1. a = 3

2. a = 8

3. c = 2

Step-by-step explanation:

7a x 8 = 168

• 56a = 168       <-- 7a x 8 =56
• (56a)/56 = 168/56      <-- divide both sides by 56
• a = 3

7 + 2a = 23

• (7 + 2a) - 7 = 23 - 7     <-- subtract 7 from both sides
• 2a = 16
• (2a) / 2 = 16/2       <-- divide both sides by 2
• a = 2

6c + 8c = 28

• 14c = 28       <-- 6c + 8c = 14c
• c = 2      <-- divide both sides by 14

Answer 2

Answer:

first is 3, then 8, then it's 2