selesaikanlah.
1. 2x + 1 = 9
2. 4x - 5 = 13
3. 3x = -2x - 15
4. 2x = 3x - 8
yang tau jawabannya tolong jawab ya! saya serius ga nerima jawaban yang ga jelas ya :D jangan cuma mau ambil koin nya aja ya hehe, saya butuh jawaban buat hari Senin :)
Nomor 1.
[tex]2x + 1 = 9 \\ 2x = 9 - 1 \\ 2x = 8 \\ x = \frac{8}{2} \\ x = 4[/tex]
Nomor 2.
[tex]4x - 5 = 13 \\ 4x = 13 + 5 \\ 4x = 18 \\ x = \frac{18}{4} \\ \\ x = \frac{9}{2} [/tex]
Nomor 3.
[tex]3x = - 2x - 15 \\ 3x + 2x = - 15 \\ 5x = - 15 \\ x = \frac{ - 15}{5} \\ x = - 3[/tex]
Nomor 4.
[tex]2x = 3x - 8 \\ 2x - 3x = - 8 \\ - x = - 8 \\ x = 8[/tex]
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1. 2x + 1 = 9
2x = 9 - 1
2x = 8
x = 8/2
x = 4/1
x = 4
2. 4x - 5 = 13
4x = 13 + 5
4x = 18
x = 18/4
x = 18 ÷ 2 / 4 ÷ 2
x = 9/2
3. 3x = -2x - 15
3x + 2x = -15
5x = -15
x = -15/5
x = -3/1
x = -3
4. 2x = 3x - 8
2x - 3x = -8
-1x = -8
-x = -8
x = 8
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