Question

The sum of two numbers is 45 and the different is 21.what are the numbers

Answer 1

Answer:

33,12

Step-by-step explanation:

let x+y=45

i)x-y=21(x=21+y)

*x+y=45

21+y+y=45(substituting value of x from equation i)

2y=24

y=12

*x+y=45

x+12=45

x=45-12

x=33

Answer 2

A + b = 45
a - b = 21
a = 21 + b
Use substitution
21 + b + b = 45
2b = 24
b = 12
45 - 12 = 33
The numbers are 33 and 12