Question

solve it by elumination or substitutional method​

Answer 1

Answer:

Given equations are

x - y = 0.9 ..................... (1)

2x + 2y = 11 ...................... (2)

On multiplying (1) by 2

2x - 2y = 1.8 .........................(3)

On adding (2) and (3) we get

4x = 12.8

x = 3.2

On putting value of x in (1)

3.2 - y = 0.9

y = 3.2 - 0.9

= 2.3