Question

Simplify 9-{2(5-3)+20÷3}

Answer 1

$9 - (2 \times (5 - 3) + \frac{20}{3})$
$9 - (2 \times 2 + 6.67) \\ = 9 - (4 + 6.67)$
$9 - 10.67 = ( - 1.67)$

Answer 2

9-{2(2)+20/3}

9-{4+6.67}

9-{10.67}

9-10.67=-1.67