79.5k views
0 votes
The sum of twice a number and 7 divided by 3 is 7 what is the number

2 Answers

3 votes

the answer is 7

n=7

2x7+7/3=7

14=7=21

21/3=7

User Bart Read
by
8.0k points
3 votes

let "a number" = x

(x + 7)/3 = 7

Note the equal sign. What you do to one side, you do to the other. Do the opposite of PEMDAS.

First multiply 3 to both sides

(x + 7)/3(3) = 7(3)

x + 7 = 21

Next, subtract 7 from both sides

x + 7 (-7) = 21 (-7)

x = 14

14 is your number

hope this helps

User Latovic
by
7.5k points

No related questions found

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