Question

solve the equation Q-P=8 and Q+P=18​

Answer 1

Answer:

let be the Q-P = 8 ------- (i)

and

Q+P= 18 ---------(ii)

by solving both equation we get

Step-by-step explanation:

Q = 5

now putting value of Q in equation---(i)

Q-P= 8

5-P=8

-P=8-5

P= 3

Answer 2

Answer:

P=5;Q=13.

Step-by-step explanation:

Q -P=8 -Equation 1

Q+P=18 - Equation 2

By elimination method,

2Q=26

Q=26/2

Q=13.

Substitute Q value in any of the equations.

If you take equation 1;

Q-P=8

13-P=8

-P=8-13

-P=-5

P=5

Or if you take equation 2;

Q+P=18

13+P=18

P=18-13=5.