Solve using substitution
3x - 9y = 3
6x - 3y = -24

Solve using elimination
y - 1/2x = 6
2x + 6y = 19

Question

Solve using substitution 
3x - 9y = 3 
6x - 3y = -24 

Solve using elimination 
y - 1/2x = 6 
2x + 6y = 19

mathstudent55 · Answer

For the first system, start by dividing the first equation by 3 and the second equation also by 3.

mathstudent55 · Answer

What do you get for the first equation after dividing by 3?

the_fizicx99 · Answer

Convert one into y = mx + b then plug in that for y into the other eqaution

3x - 9y = 3 
6x - 3y = -24 


6x - 3y = -24 
-6x            -6x

-3y = -6x -24
/-3       /-3     /-3

y = 2x + 8

3x - 9(2x + 8) = 3 

Can you solve from there?