Question

x+y=4;2x-5y=1 please send answer​

Answer 1

Answer:

x+y = 4 ..... 1

2x - 5y = 1 ..... 2

multiply 5,

5(x+y=4)

5x+5y=20 ..... 3

adding equation 2 and 3

2x-5y = 1

5x+5y=20

7x=21

x=21/7

x=3 substituting in equation 2

2x-5y=1

2(3)-5y=1

6-5y=1

-5y=1-6

y=-5/-5

y =1