122k views
5 votes
Help help help help

Help help help help-example-1
User Lew  Perren
by
8.2k points

2 Answers

5 votes

Answer:

n=4

Explanation:

(7+1)+n=(4+7)+1

7+1+n=4+7+1 (subtract 7 from both sides)

1+n=4+1

1+n=5

n=5-1 (Subtract 1 from both sides)

n=4

User Jan Wikholm
by
8.6k points
2 votes

Answer:

n = 4

Explanation:

Actually, in this problem, you can compare the numbers on the right to the numbers on the left and see that n must be 4 to make the lists match. (It's a problem in pattern matching.)

If you need to, you can rearrange the numbers:

(7 + 1) + n = (7 + 1) + 4

__

If that doesn't work for you, you can add up the numbers on each side and form the equation ...

8 + n = 12

In second-grade terms, this is ...

8 + ___ = 12

Hopefully, you are sufficiently familiar with your math facts to know that 4 will complete this math fact.

__

If that doesn't work for you, then invoke the addition property of equality and add -8 to both sides of the equation.

8 -8 +n = 12 -8

n = 4

User Arwin
by
9.1k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories