Question

Sei que são muitas mais me ajudem a resolver as que vcs sabem pfvr

a) -2 [-11/10 - (1/5 - 1/2) =14/5
b) -4 - [-3 - (1/2+3/4)= -3/4
c) -3/4 [5/8 + 3 - (3/2 + 2) -1/2] = -3/8
d) (-3/2 - 2)×(-3/4 - 1/2) = 10/3
e) (-3/2 + 0,2) × (-3/4 + 5/2) = -91/40

É para amanhã ​

Answer 1

Resposta:

a) Falso

b) Falso

c) Falso

d) Falso

e) Verdadeiro

Explicação passo a passo:

$a) -2 * [(-\frac{11}{10}) - (\frac{1}{5} - \frac{1}{2})] = \frac{14}{5}$

$-2 * [(-\frac{11}{10}) - (\frac{2}{10} - \frac{5}{10})] = \frac{14}{5}$

$-2 * [(-\frac{11}{10}) - (-\frac{3}{10} )] = \frac{14}{5}$

$-2 * [(-\frac{11}{10}) + \frac{3}{10} )] = \frac{14}{5}$

$-2 * (-\frac{8}{10}) = \frac{14}{5}$

$\frac{16}{10} = \frac{14}{5}$

$\frac{16}{10} \neq \frac{14}{5}$

$b) -4 - [-3 - (\frac{1}{2} + \frac{3}{4} )]= -\frac{3}{4}$

$-4 - [-3 - (\frac{4}{8} + \frac{6}{8} )]= -\frac{3}{4}$

$-4 - [-3 - \frac{10}{8}]= -\frac{3}{4}$

$-4 - [-\frac{24}{8} - \frac{10}{8}]= -\frac{3}{4}$

$-4 - [-\frac{34}{8} ]= -\frac{3}{4}$

$-4 - [-\frac{17}{4} ]= -\frac{3}{4}$

$-\frac{16}{4} - [-\frac{17}{4} ]= -\frac{3}{4}$

$-\frac{16}{4} + \frac{17}{4} = -\frac{3}{4}$

$\frac{1}{4} = -\frac{3}{4}$

$\frac{1}{4} \neq -\frac{3}{4}$

$c) -\frac{3}{4} * [\frac{5}{8} + 3 - (\frac{3}{2} + 2) -\frac{1}{2}] = -\frac{3}{8}$

$-\frac{3}{4} * [\frac{5}{8} + \frac{3}{1} - (\frac{3}{2} + \frac{2}{1} ) -\frac{1}{2}] = -\frac{3}{8}$

$-\frac{3}{4} * [\frac{5}{8} + \frac{3}{1} - (\frac{3}{2} + \frac{4}{2} ) -\frac{1}{2}] = -\frac{3}{8}$

$-\frac{3}{4} * [\frac{5}{8} + \frac{3}{1} - \frac{7}{2} -\frac{1}{2}] = -\frac{3}{8}$

$-\frac{3}{4} * [\frac{5}{8} + \frac{24}{8} - \frac{28}{8} -\frac{4}{8}] = -\frac{3}{8}$

$-\frac{3}{4} * [-\frac{3}{8}] = -\frac{3}{8}$

$\frac{3}{4} * \frac{3}{8} = -\frac{3}{8}$

$\frac{9}{32} = -\frac{3}{8}$

$\frac{9}{32} \neq -\frac{3}{8}$

$d) (-\frac{3}{2} - \frac{2}{1} ) * (-\frac{3}{4} - \frac{1}{2}) = \frac{10}{3}$

$(-\frac{3}{2} - \frac{4}{2} ) * (-\frac{3}{4} - \frac{2}{4}) = \frac{10}{3}$

$(-\frac{7}{2}) * (-\frac{5}{4}) = \frac{10}{3}$

$\frac{7}{2} * \frac{5}{4} = \frac{10}{3}$

$\frac{35}{8} = \frac{10}{3}$

$\frac{35}{8} \neq \frac{10}{3}$

$e) (-\frac{3}{2} + \frac{2}{10} ) * (-\frac{3}{4} + \frac{5}{2}) = -\frac{91}{40}$

$(-\frac{15}{10} + \frac{2}{10} ) * (-\frac{6}{8} + \frac{20}{8}) = -\frac{91}{40}$

$-\frac{13}{10} * \frac{14}{8} = -\frac{91}{40}$

$-\frac{182}{80} = -\frac{91}{40}$

$-\frac{91}{40} = -\frac{91}{40}$