Question

Solve 2x+5y = 1 and 2x-y=7?​

Answer 1

Answer:

2

Step-by-step explanation:

2x+5y=1

+. 2x-y=7

__________

4y=8

y=8\4

y=2

Answer 2

Answer:

x=4

y=1

Step-by-step explanation:

2x+5y=1       (1)

2x-y=7         (2)

subtract eq 1 from eq 2

2x-y-(2x+5y)=1-7

2x-y-2x-5y=-6

-6y=-6

y=1

putting the value of y in eq 2

2x-1=7

2x=7+1

2x=8

x=8/2

x=4