Question

se the substitution method to find all solutions of the system of equations.


2x+ y= 11
x +2y= 4

Answer 1

use*

Answer 2

\[y = 11 - 2x\]

Answer 3

substitute in the second equation

\[x + 2(11-2x)=4\]

Answer 4

solve for x

-3x =4-22

x= 6

Answer 5

go back to first equation

\[y= 11- 2(6)\]

y= -1