Question

x+y=7 ; x-y=-1
(simultaneously in graphical method)​

Answer 1

Answer:

x=3 and y=4

Step-by-step explanation:

$x + y = 7$

$x - y = - 1$

Adding equations we get:

$x + y + x - y = 7 - 1$

Or

$2x = 6$

$x = 3$

Put x in any of the equations:

$3 + y = 7$

$y = 4$

Answer 2

Answer:

x=3 and y=4

x=3 and y=4Step-by-step explanation:

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1Or

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1Or2x = 62x=6

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1Or2x = 62x=6x = 3x=3

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1Or2x = 62x=6x = 3x=3Put x in any of the equations:

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1Or2x = 62x=6x = 3x=3Put x in any of the equations:3 + y = 73+y=7

x=3 and y=4Step-by-step explanation:x + y = 7x+y=7x - y = - 1x−y=−1Adding equations we get:x + y + x - y = 7 - 1x+y+x−y=7−1Or2x = 62x=6x = 3x=3Put x in any of the equations:3 + y = 73+y=7y = 4y=4