Question

4) Calcule
a) 1\2 + 213
b) 1\3 - 1\4​

Answer 1

$a) \frac{1}{2} + 213$

$\frac{1}{2} + \frac{213}{1}$

$\frac{1}{2} + \frac{213 \times 2}{1 \times 2}$

$\frac{1}{2} + \frac{426}{2}$

$\frac{1 + 426}{2}$

$\color{red} \frac{427}{2}$

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$b) \frac{1}{3} - \frac{1}{4}$

$\frac{1 \times 4}{3 \times 4} - \frac{1}{4} = \frac{1 \times 4}{3 \times 4} - \frac{1 \times 3}{4 \times 3}$

$\frac{4}{3 \times 4} - \frac{1 \times 3}{4 \times 3}$

$\frac{4}{12} - \frac{3}{12}$

$\frac{4 - 3}{12}$

$\color{red}\frac{1}{12}$

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Att, IzabelaCristina2006 ❤️