Jawab:
penjumlah panjang
i) jika bisa , disederhanakan bentuk
Penjelasan dengan langkah-langkah:
a. -10 - 9 - 8 - ... - 1 + 0 + 1 + 2 + ...+ 10
*ini pengurangan dan penjumlahan
= (-10 +10) +(-9 + 9) + (-8 + 8) +.... + (-1 +1) + 0
= 10(0) + 0
= 0
.
b. 8 - 7 - ( 6 +(6 + 5)) + (5 + (4-3)) - (3 - (2 +1)) =
= 8 - 7 - (6 - 11) + (5 + 1) - (3 -3)
= 8 - 7 + 5 + 6 - 0
= 12
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Jawab:
penjumlah panjang
i) jika bisa , disederhanakan bentuk
Penjelasan dengan langkah-langkah:
a. -10 - 9 - 8 - ... - 1 + 0 + 1 + 2 + ...+ 10
*ini pengurangan dan penjumlahan
= (-10 +10) +(-9 + 9) + (-8 + 8) +.... + (-1 +1) + 0
= 10(0) + 0
= 0
.
b. 8 - 7 - ( 6 +(6 + 5)) + (5 + (4-3)) - (3 - (2 +1)) =
= 8 - 7 - (6 - 11) + (5 + 1) - (3 -3)
= 8 - 7 + 5 + 6 - 0
= 12