Question 47

If `+' means `multiplication', '— ' means `division', `$$\times$$' means `subtraction' and `$$\div$$' means 'addition', then 9 + 8 $$\div$$ 8 — 4 $$\times$$9 is

Solution

9 + 8 $$\div$$ 8 — 4 $$\times$$9

$$9\times 8 + 8\div 4 - 9$$

Apply bodmass rule

$$9\times 8 + 8\div 4 - 9$$

$$9\times 8 + 2 - 9$$

$$72 + 2 - 9$$

65

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