Question

$0.7a - 0.42a = 5.6$
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Answer 1

Answer:

a = 20

Step-by-step explanation:

0.7 a - 0.42 a = 5.6

⇒ 0.28 a = 5.6

⇒ a = 5.6 / 0.28

⇒ a = 20