Question 31

If '+' means '÷', '-' means 'x', 'x' means '-' and '÷' means '+', then (5 - 8 x 6 ÷ 11) + 9 = ?

Solution

'+' means '÷', '-' means 'x', 'x' means '-' and '÷' means '+', then (5 - 8 x 6 ÷ 11) + 9 = ?

$$(5 - 8\times 6\div 11) + 9$$

$$(5\times 8- 6 + 11)\div 9$$

appl bodmass rule

$$(40- 6 + 11)\div 9$$

$$45\div 9 = 5$$

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