tolong bantu kerja no 1-10

1. 19/21 × 12/15=228/315 : 3/3=76/105

2. 14/15 × 6/8=84/120 : 4/4=21/30 : 3/3=7/10

nomor 1
[tex] \frac{19}{21} \times \frac{12}{15} \\ = \frac{ 19}{7} \times \frac{4}{15} = \frac{76}{105} [/tex]

nomor 2
[tex] \frac{14}{15} \times \frac{6}{8} \\ = \frac{7}{5} \times \frac{2}{4} = \frac{14}{9} = 1 \frac{5}{9} [/tex]

nomor 3
[tex] \frac{3}{5} \times \frac{4}{9} \\ = \frac{1}{5} \times \frac{4}{3} = \frac{4}{15} [/tex]

nomor 4
[tex] \frac{28}{10} \times \frac{36}{10} \\ = \frac{14}{5} \times \frac{12}{5} \\ = \frac{168}{25} = 6 \frac{18}{25} [/tex]

nomor 5
[tex] \frac{20}{14} \times \frac{14}{3} \\ = \frac{20}{3} = 6 \frac{2}{3} [/tex]

nomor 6
[tex]4 \times \frac{13}{6} \\ = \frac{52}{6} = 8 \frac{4}{6} = 8 \frac{2}{3} [/tex]

nomor 7
[tex]12 \times \frac{11}{6} \\ = 2 \times 11 = 22[/tex]

nomor 8
[tex] \frac{36}{14} \times \frac{42}{9} \\ = \frac{4}{1} \times \frac{3}{1} = 12[/tex]

nomor 9
[tex] \frac{42}{15} \times \frac{60}{7} \\ = \frac{6}{1} \times \frac{4}{1} = 24[/tex]

nomor 1 0
[tex] \frac{81}{14} \times \frac{70}{18} \\ = \frac{5670}{252} = 22 \frac{126}{252} = 22 \frac{1}{2} [/tex]


semoga terbantu kk
maaf kalo salah
Syukron