Question

Which of the following interchanges of signs would make the given equation correct? 12÷6 x 18+ 16-15 = 5

• A. + , -
• B. x , ÷
• C. - , ÷
• D. + , x

Answer 1

Answer:

B. x , ÷

To make the given equation correct, the signs $\div$ and $\times$ need to be interchanged.

* Original Equation:

$12 \div 6 \times 18 + 16 - 15 = 5$

* After interchanging $\div$ and $\times$:

$12 \times 6 \div 18 + 16 - 15 = 5$

1. Division ($6 \div 18$):

$12 \times \frac{6}{18} + 16 - 15 = 5$

$12 \times \frac{1}{3} + 16 - 15 = 5$

2. Multiplication ($12 \times \frac{1}{3}$):

$4 + 16 - 15 = 5$

3. Addition and Subtraction:

$20 - 15 = 5$

$5 = 5$ (Left Hand Side = Right Hand Side)