ka tlong buat bsk dikumpulin pke cra ya ka .mkasih

b) 6 : b = 21 : 49
[tex]\frac{6}{b} = \frac{21}{49} \\ \frac{6}{b} = \frac{3}{7} \\ 3b = 42 \\ b = \frac{42}{3} \\ b = 14[/tex]

c) 18 : 21 = p : 28
[tex]\frac{18}{21} = \frac{p}{28} \\ \frac{6}{7} = \frac{p}{28} \\ 7p = 168 \\ p = \frac{168}{7} \\ p = 24[/tex]

d) 28 : 49 = 32 : a
[tex]\frac{28}{49} = \frac{32}{a} \\ \frac{4}{7} = \frac{32}{a} \\ 4a = 224 \\ a = \frac{224}{4} \\ a = 56
[/tex]
2. Nilai x dan y
a) 21 : 28 = 24 : (3y-4)
[tex] \frac{21}{28} = \frac{24}{3y - 4} \\ \frac{3}{4} = \frac{24}{3y - 4} \\ 3(3y - 4) = 96 \\ 9y - 12 = 96 \\ 9y = 96 + 12 \\ 9y = 108 \\ y = \frac{108}{9} \\ y = 12[/tex]
b) 24 : (x+7) = 16 : 10
[tex] \frac{24}{x + 7} = \frac{16}{10} \\ \frac{24}{x + 7} = \frac{8}{5} \\ 8(x + 7) = 120 \\ 8x + 56 = 120 \\ 8x = 120 - 56 \\ 8x = 64 \\ x = \frac{64}{8} \\ x = 8[/tex]