Question

pls answer my question with step by step explanation​

Answer 1

Answer:

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Step-by-step explanation:

$\frac{x_1 }{y_1} = \frac{x_3}{y_3} \\ \\ by \: \: cross \: \: multiply \\ \\ {x_1 y_3 } = {x_3 y_1}$

Answer 2

x1/y1=x3/y3

x1×y3=y1×x3