1. _ 17 + ( _ 21)=... 2.25. _ ( _ 31 )=... 3.jika _ 9 + n = 6 maka n=.... 4.jika n _ 7 =5. Mama. N=... 5.jika. _ 6 + n = 0 mama n=.... Tlong ya kak...

[tex]1) - 17 + (- 21) = - 17 - 21 = - 38 \\ 2)25 - ( - 31) = 25 + 31 = 56 \\ 3) - 9 + n = 6 \\ n = 6 + 9 \\ n = 15[/tex]
[tex]4)n - 7 = 5 \\ n = 5 + 7 \\ n = 12 \\ 5) - 6 + n = 0 \\ n = 0 + 6 \\ n = 6[/tex]
Semoga dapat dipahami