no 21. pake aturan operasi hitung campuran
= ( -252) - 106 + ( -72)
= (- 358)+ (-72)
= - 430
no. 22
KPK ny 504
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106+-72=34
Jadi 252-34=218
no 21. pake aturan operasi hitung campuran
= ( -252) - 106 + ( -72)
= (- 358)+ (-72)
= - 430
no. 22
KPK ny 504