Explanation

4 × 5 - 5 = 15.

First, multiply 4 by 5 to get 20, then subtract 5 to get 15.

Explanation

4 × 3 + 3 = 15.

First, multiply 4 by 3 to get 12, then add 3 to get 15.

Explanation

4 × 5 + 3 = 23.

First, multiply 4 by 5 to get 20, then add 3 to get 23.

Explanation

10 + 5 - 3 = 12.

First, add 10 and 5 to get 15, then subtract 3 to get 12.

Explanation

4 + 5 - 3 = 6.

First, add 4 and 5 to get 9, then subtract 3 to get 6.

Explanation

"X" represents 10.

So "XX" represents 20 (10 + 10 = XX).

Roman numerals for the given numbers:

• 1 - I
• 5 - V
• 10 - X
• 50 - L
• 100 - C
• 500 - D
• 1000 - M

Explanation

"X" represents 10 and "V" represents 5.

So together they form 15 (10 + 5 = XV).

Roman numerals for the given numbers:

• 1 - I
• 5 - V
• 10 - X
• 50 - L
• 100 - C
• 500 - D
• 1000 - M

Explanation

"X" represents the value of 10 in Roman numerals.

Roman numerals for the given numbers:

• 1 - I
• 5 - V
• 10 - X
• 50 - L
• 100 - C
• 500 - D
• 1000 - M

Explanation

"V" represents 5, and "I" represents 1.

So together, VI equals 6.

Roman numerals for the given numbers:

• 1 - I
• 5 - V
• 10 - X
• 50 - L
• 100 - C
• 500 - D
• 1000 - M

Explanation

The Roman numeral "V" represents the number 5.

Roman numerals for the given numbers:

• 1 - I
• 5 - V
• 10 - X
• 50 - L
• 100 - C
• 500 - D
• 1000 - M