Toloooooooooonggggg bantuuuuuu, pleaseeeee teman-teman
Matematika
Ika3110
Pertanyaan
Toloooooooooonggggg bantuuuuuu, pleaseeeee teman-teman
1 Jawaban
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1. Jawaban arkananta3456
1. 3x - 9 = 4x + 5
Pindah ruas
-x = 14
x = -14
2. 2 ( 3x + 4 ) = 6 - ( 2x + 5)
6x + 8 = 6 - 2x - 5
6x + 8 = 1 - 2x
8x = -7
x = -7/8
3.( 2 (x-3) ) / 5 = x - ( 3/5)
( 2x - 6 ) / 5 = ( 5x / 5 ) - ( 3 / 5)
( 2x - 6 ) / 5 = (5x - 3 ) / 5
Penyebut bisa kita coret (kalau di kertas lembar kerja)
2x - 6 = 5x - 3
-3x = 3
x = -1
4. (3x + 1) / (x + 2) = (3x - 2) / (x + 1)
Kali silang
( 3x + 1) (x + 1) = (3x - 2) ( x+ 2)
3x² + 3x + x + 1 = 3x² - 2x + 6x - 4
4x + 1 = 4x - 4
Sehingga persamaan di atas tidak punya penyelesaian