Question

Solve the system of equations.2x – 4y = 12
3x – 6y = 21

Answer 1

2x – 4y = 12.....A
3x – 6y = 21.....B
from equation A find the value of x or y its up to your choice and then place it in equation B in this way you will get the answer of A and B

Answer 2

sorrry you will get the answer of x and y

Answer 3

@coolaidd did you get it dear??

Answer 4

do i multiply by 2

Answer 5

no you dont hav to multiple it by 2......btw is it an elimination question????

Answer 6

2x-4y=12 place x on one side and rest of values on other side lie this
2x=12+4y
x=12+4y/2
x=12/2+4y/2
x=6+2y .....in this way you get the value of x now put this value in second equationto get the value of y
like this
3x-6y=21
3(6+2y)-6y=21
18+8y-6y=21
8y-6y=21-18
2y=3
y=3/2
so in this way you get the value of y as well
x=6+2y
x=6+2(3/2)
x=6+3
x=9

Answer 7

@coolaidd hope you understand it now =)

Answer 8

thank you :)