Question

please help
solve the system using substitution put your answer in ordered pair (x,y)
8x-y=4
5x+3y=17

Answer 1

ok so look at one of the equations, lets use the top one

8x - y = 4

can you solve this for y? it will be in terms of x

Answer 2

@priea

Answer 3

im a little confused....sorry @billj5

Answer 4

can you solve 8x - y = 4 for x?

Answer 5

let me put it another way

if i give you 8x - y = 4

what does x equal?

Answer 6

4x-y?

Answer 7

ok when you are trying to find out what a variable equals in an equation, you need to get that variable by itself on one side of the equals sign (one side of the equation)

Answer 8

lets try an easier one

Answer 9

x + 5 = 10

what does x equal?

Answer 10

5

Answer 11

correct you just got x by itself by subtracting 5 from both sides

Answer 12

ok now try again with 8x - y = 4

Answer 13

what is the first thing you would do to get x by itself?

Answer 14

ill give you a hint, you would add y to both sides

Answer 15

8x - y + y = 4 + y

Answer 16

-y + y = 0 so we have 8x + 0 = 4 + y which is 8x = 4 + y

Answer 17

are you good with that part?

Answer 18

yes

Answer 19

ok now what would you do to get x by itself?

Answer 20

8x = 4 + y, get x by itself, somehow remove the 8 coefficient

Answer 21

subtract 4 on both sides?

Answer 22

what operation is the inverse of multiplication?

Answer 23

ok if I have 8x and divide that by 8 what do i get?