Let the bigger number be ‘x’.
The sum of two numbers = 58
∴ Smaller number = 58 – x
The difference of two numbers = 28
∴ x – (58 – x) = 28
x – 58 + x = 28
2x = 28 + 58 = 86
∴ x = \(\frac{86}2\) = 43
∴ Bigger number or one number = 43
Smaller number or second number = 58 – 43 = 15
