Question

c)- 11 supra 36- (-7supra 24)= -5 supra 72+ x
d)(-9,8)+×=13-(-2supra5)

Answer 1

c)
$- \frac{11}{36} - ( - \frac{7}{24} ) = - \frac{5}{72} + x \\ - \frac{11}{36} + \frac{7}{24} = - \frac{5}{72} + x \\ - \frac{22}{72} + \frac{21}{72} = - \frac{5}{72} + x \\ \frac{1}{72 } = - \frac{5}{72} + x \\ \frac{6}{72} = x = > x = \frac{1}{12}$
d)
$( - \frac{98}{10} ) + x = \frac{13}{1} - ( - \frac{2}{5} ) \\ ( - \frac{98}{10} ) + x = \frac{65}{5} + \frac{2}{5} \\ ( - \frac{49}{5} ) + x = \frac{67}{5} \\ x = \frac{67}{5} + \frac{49}{5} \\ x = \frac{116}{5} \\ x = 23 \times \frac{1}{5}$