How do you solve the equation 5+c9=31?

2 Answers
Apr 12, 2018

c=324

Explanation:

First, get all the variables on one side of the equation and everything else on the other side. In this case, you subtract 5 from both sides to get c9=36.

Then solve for c by multiplying both sides by 9 and get c=324.

Now to check your work, you can plug -324 in for c and that will equal the right side, 31:
5+3249=31

Apr 12, 2018

c=324

Explanation:

5+c9=31 Subtract 5 on both sides to get

c9=36 Multiply by 9 on both sides to get

c=324

Check using substitution:
5+3249=31

536=31

31=31

Since we get a true statement, we know we have the correct solution!