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Solve the equation using mental math. 7 + r = 15
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4 votes
Solve the equation using mental math.

7 + r = 15

User Mhenry
by
4.5k points

2 Answers

4 votes

Answer:


\displaystyle 8 = r

Explanation:

7 + r = 15

- 7 - 7

________


\displaystyle r = 8

I am joyous to assist you anytime.

User Kelli
by
4.8k points
4 votes

Answer:

r = 8

Explanation:

7 + 8 = 15

so r = 8!

User Rehan Dominic
by
5.2k points
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