Question

(i) x + y = 4; 2x - 5y = 1
م 2(
.16وی
110​

Answer 1

Answer:

x + y = 4. eq(1)

and

2x - 5y = 1. eq (2)

we multiply by 2 in eq (1)

2x + 2y = 8

subtracting the values

2x + 2y = 8

2x - 5y = 1

- + -

——————

7y = 7

y = 7/7

y = 1

Put the value of x in equation 2

x = 1

2x - 5y = 1

2(1) - 5y = 1

2 - 5y = 1

-5y = 1-2

-5y = -1

5y = 1

y = 1/5