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A certain number is subtracted from 20. the result multiplied by 3 is equal to 45. what is the number?
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A certain number is subtracted from 20. the result multiplied by 3 is equal to 45. what is the number?

User Shalo
by
6.1k points

2 Answers

2 votes
the correct number is 15
User Tena
by
5.9k points
5 votes
Let the number is x
so 20-x=20-x
now 3×(20-x)=45
60-3x=45
-3x=45-60
-3x=-15
x=-15/-3
x=5
So the required number is5
User Timsen
by
6.2k points
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