Question

(-11) + (+18) + (-16) PLZZ help me
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Answer 1

$= ( - 11) + ( + 18) + ( - 16) \\ = ( - 11) + (18) - (16) \\ = - 9$

Answer 2

(-11 )+(+18) + (-16)

= -11+18-16

= -11+2

= -9