Question

Solve by the substitution method
8x+9y=-5
x=8-4y

Answer should be in an ordered pair.

Answer 1

substitute x=8-4y in 8x+9y=-5
8(8-4y)+9y=-5
64-32y+9y=-5
-23y=-69
y=3
substitute y=3 in sec equation
x=8-12=-4

Answer 2

it said substitution method not eliminaation

Answer 3

lalaly thank you when I substitute 3 in the second equation will you double check it for me?

Answer 4

its right... x=-4 and y=3 ;)

Answer 5

OH ...LOL see I am not very good at algebra...haha I thought I had to go back and solve some more.. Thank you! If only I could give double medals.

Answer 6

hehe im glad i could help :D

Answer 7

Thank you again!