Question

{[9 x (7.3+10.7)} - 5} + [3 x (7.8 - 6.8)}

Answer 1

160.

Explanation:

Work out the innermost parentheses first:

{[9 x (7.3+10.7)} - 5} + [3 x (7.8 - 6.8)}

= {[9 x 18} - 5} + [3 x 1}

= {162 - 5} + 3

= 160.