
Persamaan Linear satu variabel
Presentation
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Sriyani Sriyani
Used 8+ times
FREE Resource
8 Slides • 1 Question
1
Persamaan Linear satu Variabel
Oleh : Sriyani,S.Pd
2
Persamaan dan
Pertidaksamaan Linear Satu Variabel
Oleh : Sriyani, S.Pd
3
Persamaan
Persamaan adalah kalimat terbuka yang
menggunakanakan tanda ‘ = ‘
x - 2 = 5
2x = 5+x
3x - 4 = 5x + 5
4
1.
x - 8 = -5
Penyelesaian:
x - 8 = -5
x - 8 + 8 = -5 + 8 (ditambah dengan
bilangan yang sama)
x = 3
Contoh Soal : Selesaikan soal - soal di bawah ini
Menyelesaikan Persamaan Dengan cara Menambah dan
Mengurai, Mengalikan dan Membagi
5
2.3x - 8 = x
Penyelesaian :
3x - 8 = x
3x - x = x - x + 8(dikurangi dengan
bilangan yang sama)
2x = 8
2x/2 = 8/2(dibagi dengan bilangan yangsama)
x = 4
6
3.3x + 2 = 2x - 8
Penyelesaian :
3x + 2 = 2x-8
3x - 2x + 2 = 2x - 2x - 8
x + 2 = -8
x + 2 - 2 = -8 - 2
x = -10
7
4.3(2x + 1) = 2(x - 8)
Penyelesaian :
3(2x + 1 ) = 2( x - 8)
6x + 3 = 2x - 16
6x- 2x + 3 = 2x - 2x - 16
4x + 3 = -16
4x + 3 - 3 = –16 - 3
4x = -19
x = -19/4
8
TERIMAKASIH
9
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