

OPERASI AL JABAR
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•
Mathematics
•
7th Grade
•
Hard
suharningsih nn
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5 Slides • 8 Questions
1
OPERASI AL JABAR
SUHARNINGSIH, S.Pd

2
Ada dua orang kakak beradik membawa lima ekor kambing lewat dari depan rumah Si A.
Ada berapa yang lewat dari depan rumah Si A ?
2 orang manusia + 5 ekor kambing
2m + 5k
Jadi bentuk aljabarnya 2m + 5k
3
Perhatikan gambar tersebut!
Jika AB = BC = CD = AD = s
maka keliling persegi adalah AB + BC + CD + AD
AB + BC + CD + AD = s + s + s + s
Keliling = 4s
Jadi pada keliling persegi merupakan suku sejenis, sehingga s + s + s + s = 4s
4
Fill in the Blanks
Gambar tersebut menunjukkan sebuah persegi dengan panjang sisi 2n cm. Tentukan keliling persegi dinyatakan dalam n!
Type answer...
5
Pennjumlahan aljabar
dari gambar tersebut, yang dapat ditambah atau dikurangi adalah suku sejenis
12x2 + (−7x2)=5x2
(−9x)+8x = −x
6 +(−14)=−8
Jadi hasilnya 5x2−x−8
6
Fill in the Blanks
sederhanakanlah bentuk aljabar 4b+2b
Type answer...
7
Fill in the Blanks
Sederhanakanlah bentuk alajabar 9p+8q-2q+5p
Type answer...
8
Multiple Choice
Sederhanakanlah bentuk aljabar
4(3x2+2x)−15x2−3x2+8x
3x2+8x
−3x2−8
3x2−8
9
Multiple Choice
Jumlah dari 5a+8 dan 8a + 3
13a +11
5a +8a +11
13a − 11
13a +11a
10
Pengurangan Bentuk Aljabar
Ingat bahwa a dikurangkan dari b artinya b - a, bukan a - b
Dari gambar tersebut
(9p − 6q) − (5p−3q)Sehingga 9p−5p=4p
dan −6q + 3q=−3q
jadi hasilnya 4p−3q
11
Multiple Choice
Kurangkan 7p+14 dari 9p+12
2p−2
−2p+2
−2p−2
2p+2
12
Multiple Choice
Kurangkanlah −4(2x+3) dari −5(x−2) !
−3x−22
3x+22
3x−22
−3x+22
13
Open Ended
Apa yang dapat kamu simpulkan pada materi kali ini, dan tuliskan letak kesulitan kalian pada materi kali ini!
OPERASI AL JABAR
SUHARNINGSIH, S.Pd

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