Question

x+y=7,2x+y=11 using elimination method​

Answer 1

Step-by-step explanation:

x + y = 7____ { 1 }

2x + y = 11_____ { 2 }

(-) (-) = (-)

x - 2x = 7-11

x = 4

put x in ( 1 ),

y = 7-4 = 3

Answer 2

Answer:

X + 2Y = 7 .....(1)

2X + Y = 11 .....(2)

MULTIPLY (1) BY 2

WE GET, 2X + 4Y = 14 ......(3)

SUBSTARCT (2) FROM (3)

2X + 4Y = 14

- 2X + Y = 11

WE GET, 3Y = 3

THEREFORE Y = 1 .....(4)

PUT (4) IN (1)

WE GET , X + 2 = 7

SO , X = 5

THEREFORE , X = 5 AND Y = 1