3x-4x+21=15 what is the answer to this question ? and how do I get my answer?

asked May 3, 2018 159k views

0 votes

8.5k points

0 Comments

Please log in or register to add a comment.

5 votes

3x-4x+21=15
\/
-1x+21=15
-21 -21
_______
-1x=-6
__. __
-1. -1
x=6

Larue answered May 5, 2018

by Larue

8.3k points

0 Comments

4 votes

3x - 4x + 21= 15; -1x + 21 - 21= 15 - 21; -1x ÷ -1 = -6 ÷ -1; x = 6.
The answer is x = 6.

7.8k points

0 Comments

Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.