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3 years ago

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

Mathematics

2 answers:

3241004551 [841]3 years ago

7 0

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

EastWind [94]3 years ago

6 0

Answer:

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

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