Question

Find the sum of:

−312, 39 and 192

Answer 1

(–312) + (+39) + (+192)

= (–231) + (–81) + (+39) + (+192)

= (–231) + (–81) + (+231)

= (–231) + (+231) + (–81)

= 0 + (–81)  ...[∵ (–a) + (a) = 0]

= –81