Which two signs need to be interchanged to make the following equation correct?
{(78 + 70) − (6 × 2))} ÷ 2 = 10
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. −, +.
Given equation: {(78 + 70) − (6 × 2))} ÷ 2 = 10
Option 1) −, +
After interchanging −, + the equation is:
{(78 - 70) + (6 × 2))} ÷ 2 = 10
⇒ {(8) + (12)} ÷ 2 = 10
⇒ 20 ÷ 2 = 10
⇒ 10 = 10