Question

calcule e simplifique o resultado, quando for possível:
2/5+1/3
5/8+1/3
5/8+7/12
1/4-1/8
5/4+1/2

Answer 1

$\frac{2}{5} + \frac{1}{3} = \\ \\ \frac{2 + 1}{15} = \\ \\ \frac{3 ^{ \div 3} }{15 ^{ \div 3} } = \frac{1}{5}$

$\frac{5}{8} + \frac{1}{3} = \\ \\ \frac{5 + 1}{24} = \\ \\ \frac{6 ^{ \div 6} }{24^{ \div 6} } = \frac{1}{4}$

$\frac{5}{8} + \frac{7}{12} = \\ \\ \frac{5 + 7}{24} = \\ \\ \frac{12 ^{ \div 12} }{24 ^{ \div 12} } = \frac{1}{2}$

$\frac{1}{4} - \frac{1}{8} = \\ \\ \frac{1 - 1}{8} = \\ \\ \frac{0^{ \div 0} }{8 ^{ \div 0} } = 0$

$\frac{5}{4} + \frac{1}{2} = \\ \\ \frac{5 + 1}{4} = \\ \\ \frac{6 ^{ \div 2} }{4 ^{ \div 2} } = \frac{3}{2}$