Question

Solve the system of equations using the substitution method.

{4x+5y=7
{y=3x+9



Enter your answers in the boxes.

x=


y=

Answer 1

X= -2

Y=3

Explanation:

I took the test and this is correct

Answer 2

4x+5y=7
y=3x+9

1) 4x+5(3x+9)=7 2) y=3(-2)+9
y= -6 +9
4x+15x+45=7 y=3
19x+45=7
19x= -38
x= -2
x is -2 and y is 3