If '+' means 'x', '-' means '÷', 'x' means '+' and '÷' means '-', then 42 - 6 x 7 + 8 ÷ 9 - 3 = ?
Latek
$$ 42 \div 6 + 7 \times 8 - 9 \div 3 $$
$$ 7 + 7 \times 8 - 3 $$
$$ 7 + 56 - 3 $$
63 -3 = 60
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