3 years ago

A number subtracted from 90 is 3 times that number

Mathematics

2 answers:

OleMash [197]3 years ago

7 0

90-n=3n hope this helps you

Harlamova29_29 [7]3 years ago

3 0

The equation is 90-n=3n but then to solve it you add n to both sides to get the variable on one side so then
90-n=3n becomes 90=4n and n=22.5
so the number is 22.5

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