1/2+1,25-1/5 jawab dengan jalan pecahan ini terlahir
[tex] \frac{1}{2} + 1.25 - \frac{1}{5} \\ \\ = \frac{1}{2} + \frac{125}{100} - \frac{1}{5} \\ \\ = \frac{1}{2} + \frac{5}{4} - \frac{1}{5} \\ \\ = \frac{10 + 25 - 4}{20} \\ \\ = \frac{31}{20} = 1 \frac{11}{20} [/tex]
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