220k views
1 vote
Four times the difference of a number and 7 is 12
this is math not geography sorry.

2 Answers

5 votes
4(y - 7) = 12

Simplify both sides:
4(y - 7) = 12

(4)(y) + (4)(- 7) = 12 (Distribute)

4y+ - 28 = 12

4y - 28 = 12


Add 28 to both sides:
4y - 28 + 28 = 12 + 28

4y = 40

Divide both sides by 4:
4y/4 = 40/4

y = 10


Answer: y = 10



Hope that helps!!! ( y = 10)

User Merin
by
6.5k points
5 votes
4(n - 7) = 12
Distribute the 4.
4n -28 = 12
Add 28 to both sides.
4n = 40
Divide by 4.

The answer is n = 10
User Yiinewbie
by
7.2k points