7(m-12)=5m a) -7 b) 6 c) 42 d) -42

QAmmunity.org

My account
Edit my Profile
Private messages
My favorites

Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question

asked Apr 25, 2016 31.7k views

5 votes

7(m-12)=5m
a) -7
b) 6
c) 42
d) -42

Mathematics
high-school

James Austin asked

by James Austin

7.3k points

0 Comments

Please log in or register to add a comment.

Please log in or register to answer this question.

2 Answers

0 votes

7(m-12) = 5m

7m - 84 = 5m

2m - 84 = 0

2m = 84

m = 42

The answer is C) 42

Melena answered Apr 25, 2016

by Melena

7.7k points

0 Comments

Please log in or register to add a comment.

5 votes

$7(m-12)=5m \\ \\ 7m - 84 = 5m \\ \\ -84 = 5m - 7m \\ \\ -84 = -2m \\ \\ (-84)/(-2) = m \\ \\ (84)/(2) = m \\ \\ 42 = m \\ \\ m = 42 \\ \\ Answer: \fbox {m = 42}$

PollusB answered Apr 30, 2016

by PollusB

8.7k points

0 Comments

Please log in or register to add a comment.

Ask a Question

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

8.6m questions

11.2m answers

0 Comments

Please log in or register to add a comment.

Please log in or register to answer this question.

2 Answers

0 Comments

Please log in or register to add a comment.

0 Comments

Please log in or register to add a comment.

Other Questions