Question

solve this problem please​

Answer 1

a) 17/45

b) 11/12

c) 0

d) 14/4

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Answer 2

Step-by-step explanation:

$a) \frac{7}{9} - \frac{2}{5}$

$taking \: lcm \: of \: 9 \: and \: 5 \:$

$we \: get \: 45$

$\frac{7 \times 5}{9 \times 5} - \frac{2 \times 9}{5 \times 9}$

$\frac{35}{45} - \frac{18}{45}$

$= \frac{17}{45}$

$b) \frac{11}{6} - \frac{11}{12}$

$lcm \: of \: 6 \: and \: 12 \: is \: 12$

$\frac{11 \times 2}{6 \times 2} - \frac{11 \times 1}{12 \times 1}$

$\frac{22}{12} - \frac{11}{12}$

$= \frac{11}{12}$

$c) \frac{5}{8} - \frac{5}{8}$

$the \: denominator \: is \: same \: so \: we \: are \: not \: taking \: lcm$

$= 0$

$d) \frac{7}{4} + \frac{7}{4}$

$the \: denominator \: is \: same \: so \: we \: are \: nt \: taking \: lcm$

$= \frac{14}{4}$

$in \: simplified \: term$

$= \frac{7}{2}$

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