Question

solve x+y= 15, x-y=5​

Answer 1

Answer:

☞ x + y = 15........①

☞ x - y = 5..........②

Adding equations ① and ②

☞ 2x = 20.......y cancels out

☞ x = 10.......③

Substituting the value of x=10 in eqn ①

☞ 10 + y = 15

☞ y = 15 - 10

☞ y = 5

☞ x = 10 and y=5 is the solution of equation.

Answer 2

Answer:

x = 10 and y=5

Step-by-step explanation:

x + y = 15........(1)

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

Adding equations (1) and (2)

2x = 20.......y cancel out

x = 10.......(3)

Substituting the value of x=10 in equation (1)

10 + y = 15

y = 15 - 10

y = 5

x = 10 and y=5 is the solution of equation.