1-5 bantu jawab dong plis Pakai cara besok dikumpulkan

1.8,26+5,3= sejajarkan antara koma dengan koma. hasilny=13,56

2.
[tex]2 \frac{1}{4} \div \frac{6}{10} = \frac{9}{4} \div \frac{6}{10} = \frac{9}{4} \times \frac{10}{6} = \frac{90}{24} = 3 \frac{12}{24} = 3\frac{1}{2} [/tex]
3.
[tex]0.64 \times \frac{3}{8} \div 125\% = \\ \frac{3}{8} = 2.66 \\ 125\% = \frac{125}{100} = 1.25 \\ \\ jadi = 0.64 \times 2.66 \div 1.25 = 1.7024 \div 1.25 = 1.36192[/tex]
4.
[tex]3 \frac{5}{8} - \frac{5}{6} = \frac{29}{8} - \frac{5}{6} = \frac{87}{24} - \frac{20}{24} = \frac{67}{24} = 2 \frac{19}{24} [/tex]
5.??

maaf klo salah :)

no 4 jawab nya benar