Question

x-5y=-4, x+8y=-4

Answer 1

There are several ways to solve this:

1. Substitution

-x + 5y= -4
5y+4=x
x=5y+4...(1) that's our first equation

4x + 3y = 16
substitute our first equation
4(5y+4) + 3y = 16
20y + 16 + 3y = 16
23y=0
y=0

change y in our first equation with the value
x=5y+4
x=5(0) + 4
x=4

That way, we get:
x=4
y=0

2. Elimination
-x + 5y = -4
4x + 3y = 16

First, multiply the first equation by 4, in order to produce 4x
-x + 5y = -4------|x4|
4x + 3y = 16----|x1|

-4x+20y= -16
4x + 3y = 16
-------------------- + (to eliminate the x, you have to add them)
23y=0
y=0
then change the y in one of the equations:
4x + 3(0) = 16
4x=16
x=4

That way, you get x=4 and y=0

Answer 2

make me best respnse

Answer 3

thank

Answer 4

you

Answer 5

u welcome