Question

7/10-1/2
3/6+2/12
4/14+1/7
1/3+3/9​

Answer 1

(I)

$\frac{1}{5}$

(ii)

$\frac{3}{2}$

(iii)

$\frac{41}{119}$

(iv)

$\frac{2}{3}$

Step-by-step explanation:

(I)

$\frac{7}{10} - \frac{1}{2} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:( lcm = 10) \\ = \frac{7 - 5}{10} = \frac{2}{10} = \frac{1}{5}$

(ii)

$\frac{3}{6} + \frac{2}{12} \: \: \: \: \: \: \: \: \: \: \: \:( lcm = 12) \\ = \frac{6 + 12}{12} = \frac{18}{12} = \frac{3}{2}$

(iii)

$\frac{4}{14} + \frac{1}{17} \: \: \: \: \: \: \: (lcm = 238) \\ = \frac{68 + 14}{238} = \frac{41}{119}$

(iv)

$\frac{1}{3} + \frac{3}{9} \: \: \: \: \: \: (lcm = 9) \\ \frac{3 + 3}{9} = \frac{6}{9} = \frac{2}{3}$

hope helps.

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