Question 57

If '$$+$$' means '$$\times$$', '$$-$$' means '$$+$$', '$$\times$$' means '$$\div$$' and '$$\div$$' means '$$-$$', then,

$$9 \div 5 + 4 - 4 \times 2 = ?$$

Solution

$$9 \div 5 + 4 - 4 \times 2 $$

Given

'$$+$$' means '$$\times$$', '$$-$$' means '$$+$$', '$$\times$$' means '$$\div$$' and '$$\div$$' means '$$-$$

now equation

$$9-5 \times 4 + 4 \div 2$$

$$9-20 + 2 $$

$$-9$$

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