Question

If you want to solve system of linear equation by substitution you ( for example ) :

Equation (1)
Equation (2)

You find x in equation (1) and then substitute it in equation (2) and when you find y in equation (2)
you substitute it in equation (1)

??

Answer 1

Aroub :O:O

Answer 2

:)(:

Answer 3

Yes! :D =D

Answer 4

lol, sounds confusing right? -.-

Can you solve this one for me? ( with steps ) PLEASE =)

8x+4y=12
10x+5y=15

Answer 5

8x + 4y = 12
10x + 5y = 15

2x + y = 3
2x = -y + 3
x = -1/2 y + 3/2

10(-1/2 y + 3/2) + 5y = 15
-5y + 15 + 5y = 15
6 = 15 << no solution

Answer 6

both equations are same

Answer 7

oops, i half-updated some mistake
should be 15=15

Answer 8

Oh I got that too! I thought I did something wrong :P lol thank youuu all :DD

Answer 9

8x+4y=12 is same as 2x+y=12

10x+5y=15 is same as 2x+y=12

So infinitely many solutions

Answer 10

Wait! It's no solution or infinite solution? O.o

Answer 11

infinitely many -- it'd be no-solutions if the numbers weren't equal (in the case I had before I changed to 15=15. x.x)

Answer 12

Aooh! Thank you :D