hay kwn, bsa gak bntuin aku soal yg ini: 5 + (-7) = -7 + 5 = ( 5 + -7 ) + -2 = 5 + (-7 + -2) =

Question

Matematika Diposting : 2017-07-26 Diupdate : 2021-08-17 Tasyapapilaya

Pertanyaan

hay kwn, bsa gak bntuin aku soal yg ini:
5 + (-7) =
-7 + 5 =
( 5 + -7 ) + -2 =
5 + (-7 + -2) =

Answer 1

5 + (-7) = - 2
-7 + 5 = - 2
(5+-7)+-2 = - 2 + 2 = 0
5+ (-7+-2) = 5+-9 = - 4

Answer 2

5 + (-7) = -2
-7 + 5 =-2
( 5 + -7 ) + -2 =-2+(-2)= 0
5 + (-7 + -2) =5 +-9=-4