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

Mathematics

2 answers:

vlabodo [156]3 years ago

4 0

4(2n+3)=128n + 12=128n = 0 n = 0

AnnZ [28]3 years ago

3 0

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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