Question

Find the sum and difference of 1 and 2 2

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Answer 1

Answer:

3/2 – 11/4 = (6 – 11)/4 = –5/4

Thus, difference is 5/4

Answer 2

Step-by-step explanation:

$\tt 1 \dfrac{1}{2}=\dfrac{(1 \times 2)+1}{2}=\dfrac{3}{2} \quad 2 \frac{3}{4}=\dfrac{(2 \times 4)+3}{4}=$

$\tt \dfrac{12}{8}+\dfrac{22}{8}=\dfrac{12+22}{8s 2 \times 2}=\dfrac{17}{4}$

So,

$\tt 1 \frac{1}{2}+2 \frac{3}{4}=\frac{17}{4} . \\ \\ \frac{22}{8}-\frac{12}{8}=\frac{22-12}{8}=\frac{10}{8} \\ \\ =\frac{2 \times 5}{2 \times 2 \times 2}=\frac{5}{4}$

So,

$\tt2 \dfrac{3}{4}-1 \dfrac{1}{2}=\dfrac{5}{4} .$