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Seven times a number is 20 more than five times that number. Find the number.
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2 votes
Seven times a number is 20
more than five times that
number. Find the number.

User Markus Moenig
by
4.7k points

1 Answer

2 votes

Answer: 10

Explanation:


7a-20=5a\\7a-20-5a=5a-5a\\2a-20=0\\2a-20+20=0+20\\2a=20\\

Divide both parts of the equation by 2:


a=10

User Dangelsaurus
by
4.1k points
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