Question 43
Which two signs need to be interchanged to make the following equation correct?
$$7 - 9 \times 3 \div 9 + 5 = 5$$
Solution
$$7 - 9 \times 3 \div 9 + 5$$
Interchanging $$+ and -$$ , we get .
$$7 + 9 \times 3 \div 9 - 5$$
=$$7 + 9 \times \frac{1}{3} - 5$$
=$$7 + 3 - 5$$ = 5
So, the answer would be option c)$$+ and -$$
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