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$$\frac{90}{126}=\frac{90:18}{126:18}=\frac{5}{7}<br />$$
$$\frac{90}{126}=\frac{90:18}{126:18}=\frac{5}{7}<br />$$
$$\frac{90}{126}=\frac{90:18}{126:18}=\frac{5}{7}<br />$$
$$\frac{90}{126}=\frac{90:18}{126:18}=\frac{5}{7}<br />$$
$$\frac{90}{126}=\frac{90:18}{126:18}=\frac{5}{7}<br />$$