Question

Solve the equations by substitution.
8x = 2y + 5
3x = y + 7

x =
y =

Answer 1

8x = 2y + 5
3x = y + 7 OR Y=3X-7
8X=2(3X-7)+5
8X=6X-14+5
8X-6X=-9
2X=-9
X=-9/2
X=-4.5 ANS.
8*-4.5=2Y+5

Answer 2

-36=2Y+5
2Y=-36-5
2Y=-41
Y=-41/2
Y=-20.5 ANS.
PROOF:
3*-4.5=-20.5+7
-13.5=-13.5

Answer 3

The given equations are,
8x = 2y + 5 ...(1)
3x = y + 7
3x-7 = y
y = 3x-7
Substituting in (1), we get
3x = 2(3x-7)+5
3x = 6x-14+5
3x-6x = -9
-3x = -9

Answer 4

So x=-3, y=-9?

Answer 5

are you sure x=-3?

Answer 6

-3x=-9 =3 not -3

Answer 7

Oh

Answer 8

And y=9?

Answer 9

yes...

Answer 10

yes

Answer 11

ok lol..

Answer 12

Got it, thanks. One problem, I can only give one medal.

Answer 13

lol well i replied first!

Answer 14

and i explained it in more detail,

Answer 15

lool but i am writting whilie giving the anwser i just you are faster than me :P but deserve :) i am new

Answer 16

lol well i wrote it first, but watever-______-

Answer 17

lool fine you win :P

Answer 18

:)

Answer 19

Sorry @nader1 :(

Answer 20

i just start today to help people :P but anytime for help i am here

Answer 21

it is kk giver her what she want ^^

Answer 22

Nice attitude! Btw she can give you a medal.

Answer 23

if she wantit gona be nice from her if not i respect her :) anyways do you have any question?

Answer 24

Not right now.