boleh bantu jawab ga?? besok dikumpulin
بِسْـــمِ اللَّهِ الرَّحْمَــنِ الرَّحِيْمِ
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Nomor 1:
[tex] \frac{x}{20} = \frac{12}{12 + 4} \\ \\ \frac{x}{20} = \frac{12}{24} \\ \\ \frac{x}{20} = \frac{1}{2} \\ \\ 20 \times 1 = 2 \times x \\ \\ 20 = 2x \\ \\ x = \frac{20}{2} \\ \\ x = 10[/tex]
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Nomor 2:
[tex] \frac{9}{20} = \frac{10}{10 + x} \\ \\ 20 \times 10 = (10 + x) \times 9 \\ \\ 200 = 90 + 9x \\ \\ 200 - 90 = 9x \\ \\ 110 = 9x \\ \\ x = \frac{110}{9} \\ \\ x = 12.2[/tex]
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Nomor 3:
[tex] \frac{12}{26} = \frac{x}{x + 15} \\ \\ \frac{6}{13} = \frac{x}{x + 15} \\ \\ 13 \times x = (x + 15) \times 6 \\ \\ 13x = 6x + 90 \\ \\ 13x - 6x = 90 \\ \\ 7x = 90 \\ \\ x = \frac{90}{7} \\ \\ x = 12.8[/tex]
وَاللَّهُ عَالَمُ بِاالصَّوَافَ
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