2/5 + (-1/5) + 7 + (-3) kak tolong dengan cara
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Jawab:
[tex] \frac{2}{5} + ( - \frac{1}{5} ) + 7 + ( - 3) \\ = \frac{2}{5} - \frac{1}{5} + 7 - 3 \\ = \frac{2}{5} - \frac{1}{5} + \frac{7 \times 5}{1 \times 5} - \frac{3 \times 5}{1 \times 5} \\ = \frac{2}{5} - \frac{1}{5} + \frac{35}{5} - \frac{15}{5} \\ = \frac{2 - 1 + 35 - 15}{5} \\ = \frac{21}{5} = 4 \frac{1}{5} [/tex]
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