14. hitunglah (-9²) 15.
hitunglah -9²
16. hitunglah (-7)+31=
17. hitunglah 3² x 3³ + 1/2
18. Hitunglah 2/7 x 7/24
19. Hitunglah 3/3 : 3 + 1/3
20. Hitunglah 4/5 x 1/2 : 5
bantu jwb ya kk
hitunglah -9²
16. hitunglah (-7)+31=
17. hitunglah 3² x 3³ + 1/2
18. Hitunglah 2/7 x 7/24
19. Hitunglah 3/3 : 3 + 1/3
20. Hitunglah 4/5 x 1/2 : 5
bantu jwb ya kk
Penjelasan dengan langkah-langkah:
14. (-9²) = (-9)×(-9) = 81
15. -9² = -(9)² = -(9)×(9) = -81
16. (-7) + 31 = 24
17. 3² × 3³+ ½ = (3×3) × (3×3×3) + ½
= 9 × 27 + ½
= 243 + ½
= 486/2 + ½
= 487/2
= 243,5
18. 2/7 × 7/24 = 14/168
= 2/24
= 1/12
19. 3/3 ÷ 3 + ⅓ = 3/3 ÷ 3/1 + ⅓
= 3/3 × 1/3 + ⅓
= 3/9 + ⅓
= 3/9 + 3/9
= 6/9
= 2/3
20. 4/5 × ½ : 5 = 4/10 : 5
= 4/10 : 5/1
= 4/10 × 1/5
= 4/50
= 2/25
Maaf kalau ada yg salah ^_^