30-01-2018
Mathematics

contestada

The sum of four times a number and negative three is twelve. What is the number?

Respuesta :

30-01-2018

The number is 3.75.
4n-3=12.
+3 to both sides
4n=15.
15 divided by4=3.75.

Checking Work:
4(3.75)=15
15-3=12.

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