Question

Find two numbers with a sum of 20 and a difference of 14.
A. 4 and 18
B. –3 and –17
C. 2 and 16
D. 3 and 17

Answer 1

let two nos be a b
a+b=20
a-b=14
solve them!!!

Answer 2

let x and y be the number respectively
x+y = 20 -(1)
x-y = 14 (2)
(1) +(2)
2x = 34
x=17
Put x=17 into (1)
y=20-17 =3
therefore the 2 numbers are 3 and 17

Answer 3

good job