Question

Solve each system of equations by using substitution: Show work and step! Please! :D
I worked the top equation and I am to the point where I am entering into the bottom equation. <--- I need help on that part.
16. - x - y = -2
4x + 5y = 16

Answer 1

http://www.purplemath.com/modules/systlin4.htm

Answer 2

@Compassionate sorry won't help me

Answer 3

-y=-2+x all divided by -1
so then y=2-x
then plug into other one:
4x + 5(2-x) =16
4x + 10-5x =16
subtract 10
4x-5x=6
-x=16
x=-16

Answer 4

combine like terms ----> 4x - 5x

Answer 5

where did you get - 16

Answer 6

yes you combine the like terms

Answer 7

from the previous process x=-16

Answer 8

@hardequalsmath would x = -6 or x = 6

Answer 9

oh shoot your right! I meant -6
Whoops! so then you plug -6 in.

Answer 10

SO:-6-y=-2
-y=4
y=-4

Answer 11

wouldn't you plug in -6 to -x make it a positive

Answer 12

oh yeah sorry agian yes
I didnt see the negative so 6-y=-2
-y=-8
y=8

Answer 13

-y = 8
y = -8 ----> divided by -1

Answer 14

@hardequalsmath sorry man!