Question

please guys solve this question please linear equations​

Answer 1

Answer:

i) x=99

y=81

ii) x=4

y=2

Answer 2

Answer:

1) x = 99 , y = 81

2) x = 4 , y = 2

Step-by-step explanation:

1) x + y = 180 - (1)

x - y = 18 - (2)

Adding both the equation

x + y = 180

+x - y = 18

2x-0 = 198

2x = 198

x = 198/2

x = 99

Substituting x=99 in equation (2)

99 - y = 18

- y = 18 - 99

- y = -81

y = 81

2) x + y = 6 - (1)

x - y = 2 - (2)

Adding both the equation

x + y = 6

x - y = 2

2x - 0 = 8

2x = 8

x = 8/2

x = 4

Substituting x = 4 in equation (1)

x + y = 6

4 + y = 6

y = 6 - 4

y = 2