Brp hasil dr 1. 1/4+2 2/5= 2. 0,8-1/25= 3. 125x7 5/12= Trima kasih sblmnya

1) 1/4 + 2 2/5 = 1/4 + 12/5
                      = 5/20 + 48/20
                      = 53/20
                      = 2 13/20

2) 0,8 - 1/25 = 0,8 - 0,04
                    = 0,76

3) 125 x 7 5/12 = 125/1 x 89/12
                         = 11.125/12
                         = 927,083

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[tex] 1.)\frac{1}{4} + 2\frac{2}{5} = \frac{1}{4} + \frac{12}{5} = \frac{5}{20} + \frac{48}{20} = \frac{53}{20} = 2 \frac{13}{20} [/tex]
[tex] 2.)\frac{8}{10} - \frac{1}{25} = \frac{40}{50} - \frac{2}{50} = \frac{38}{50} = 0.76[/tex]
[tex]3.)125 \times 7 = 875 \\ \frac{875}{100} \times 7 \frac{5}{12} = \frac{875}{100} \times \frac{89}{12} = \frac{10.500}{1200} \times \frac{8900}{1200} = \frac{93450 \div 2}{1200 \div 2} = \frac{46725 \div 5}{600 \div 5} = \frac{9345 \div 5}{120 \div 5} = \frac{1869 \div 3}{24 \div 3} = \frac {623}{8} = 77 \frac{7}{8} [/tex]
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