Question

qual é o valor da expressões:


(-0,3)-(-1/4)+(+3/5)=



(-1,2)+(-5/6)-(+0,6)​

Answer 1

Explicação passo-a-passo:

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$- 0.3 - ( - \dfrac{1}{4} ) + ( + \dfrac{3}{5} )$

$- \dfrac{3}{10} + \dfrac{1}{4} + \dfrac{3}{5}$

$\dfrac{ - 6 + 5 + 12}{20}$

$\dfrac{11}{20}$

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$- 1.2 + ( - \dfrac{5}{6} ) - ( + 0.6)$

$- 1.2 - \dfrac{5}{6} - 0.6$

$- 1.8 - \dfrac{5}{6}$

$- \dfrac{18}{10} - \dfrac{5}{6}$

$- \dfrac{18 {}^{ \div 2} }{10 {}^{ \div 2} } - \dfrac{5}{6}$

$- \dfrac{9}{5} - \dfrac{5}{6}$

$- \dfrac{54 + 25}{30}$

$- \dfrac{79}{30}$