التمرين رقم 3

$$-\frac{88}{22} = -\left(\frac{2 \times 2 \times 2 \times 11}{2 \times 11}\right) = -\left(\frac{\cancel{2} \times 2 \times 2 \times \cancel{11}}{\cancel{2} \times \cancel{11}}\right) = -\frac{4}{1} = -4$$

$$-\frac{96}{122} = -\left(\frac{2 \times 2 \times 2 \times 2 \times 2 \times 3}{2 \times 61}\right) = -\left(\frac{\cancel{2} \times 2 \times 2 \times 2 \times 2 \times 3}{\cancel{2} \times 61}\right) = -\frac{48}{61}$$

$$-\frac{27}{243} = -\left(\frac{3 \times 3 \times 3}{3 \times 3 \times 3 \times 3 \times 3}\right) = -\left(\frac{\cancel{3} \times \cancel{3} \times \cancel{3}}{\cancel{3} \times \cancel{3} \times \cancel{3} \times 3 \times 3}\right) = -\frac{1}{9}$$

$$-\frac{68}{170} = -\left(\frac{2 \times 2 \times 17}{2 \times 5 \times 17}\right) = -\left(\frac{\cancel{2} \times 2 \times \cancel{17}}{\cancel{2} \times 5 \times \cancel{17}}\right) = -\frac{2}{5}$$

$$-\frac{28}{49} = -\left(\frac{2 \times 2 \times 7}{7 \times 7}\right) = -\left(\frac{2 \times 2 \times \cancel{7}}{\cancel{7} \times 7}\right) = -\frac{4}{7}$$

$$-\frac{36}{72} = -\left(\frac{2 \times 2 \times 3 \times 3}{2 \times 2 \times 2 \times 3 \times 3}\right) = -\left(\frac{\cancel{2} \times \cancel{2} \times \cancel{3} \times \cancel{3}}{\cancel{2} \times \cancel{2} \times 2 \times \cancel{3} \times \cancel{3}}\right) = -\frac{1}{2}$$

$$-\frac{48}{84} = -\left(\frac{2 \times 2 \times 2 \times 2 \times 3}{2 \times 2 \times 3 \times 7}\right) = -\left(\frac{\cancel{2} \times \cancel{2} \times 2 \times 2 \times \cancel{3}}{\cancel{2} \times \cancel{2} \times \cancel{3} \times 7}\right) = -\frac{4}{7}$$