Question

I need a little help with Solving Linear Systems Using Substitution...

Answer 1

to find x through substitution, we have to re-write y in terms of x and substitute into equation 2

Answer 2

if: 22x - y = -23 then

y = 22x + 23

Answer 3

if we replace "y" with "22x+ 23" in equation 2 we get:

11x + 12(22x+23) = 1

and then we can solve for x

Answer 4

ok... hold on ill try

Answer 5

i got -49?

Answer 6

hm, not what I got, let's try working through it step by step

Answer 7

lol k

Answer 8

11x + 12(22x+23) = 1

using the distributive property, A(B+C) = A*B + A*C

so

12(22x + 23) = 12*22x + 12*23 = 264x + 276

Answer 9

that gives us:

11x + 264x + 276 = 1

can you try solving for x now?

Answer 10

I still got -49

11x+264+276=1
11x+540=1
11x=-539
divide both sides by eleven
x=-49
???

Answer 11

it's 264x, not 264

Answer 12

11x+264+276=1

275x + 276 = 1
275x = - 275
x = ?

Answer 13

still there?

Answer 14

yeah sorry my cousin wanted to hold the lizard lol

Answer 15

so x=-1?

Answer 16

yes

Answer 17

sweet

Answer 18

im gonna open another... ok?

Answer 19

k