The system of equations is coincident. What are the missing values? 3x+y==7 9x+__y=__ PLease expand if possable.

Mathematics · Middle School · Tue Nov 03 2020

Answered on

Given :

Here system of equations is coincident. 

We have,

3x+y =7      ….1 

9x+__y =__      ….2

 

Multiplying equation 1 by 3, we get

9x + 3y = 21       ….3

 

Thus, the Missing values are 3 and 21.