Question

13+(-30)+17

Answer 1

\(13+\left(-30\right)+17\\ =\left(13+17\right)-30\\ =30-30\\ =0\)

Answer 2

13+(-30)+17

=13+[(-30)+17]

=13 +  (- 13)

= 0

Answer 3

^_13+(-30)+17

^{_{=13+[(-30)+17]}}

^{_{=13 +  (- 13)}}

^{_{= 0}}

Answer 4

13+(-30)+17

= -(30-13)+17

= -17+17

=0

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