Question

me ajuda por favor!!!
responda as frações
a)- 5/12 - 1/12 + 4/6
b) 1/5 - 2/1 + 1/7
c)7/8 - 1/4 + 2/3​

Answer 1

Resposta:

OLÁ

VAMOS A SUA PERGUNTA:⇒⇒

A:=====>

$\sf -\dfrac{5}{12}- \dfrac{1}{12}+ \dfrac{4}{6}$

$\sf \dfrac{-5-1}{12}+ \dfrac{4}{6}\approx0.166666667$

$\sf \dfrac{-6}{12}+ \dfrac{4}{6} \approx0.166666667$

$\sf -\dfrac{1}{2}+ \dfrac{4}{6} \approx0.166666667$

$\sf -\dfrac{1}{2}+ \dfrac{2}{3} \approx0.166666667$

$\sf -\dfrac{3}{6}+ \dfrac{4}{6} \approx0.166666667$

$\sf \dfrac{-3+4}{6} \approx0.166666667$

$\boxed{\bold{\displaystyle{\clubsuit\ \spadesuit\ \maltese\ \frac{1}{6}\approx0.166666667 }}}\ \checkmark$

B:=====>

$\sf \dfrac{1}{5}- \dfrac{2}{1}+ \dfrac{1}{7}$

$\sf \dfrac{1}{5}-2+\dfrac{1}{7}\approx-1.657142857$

$\sf \dfrac{1}{5}- \dfrac{10}{5}+ \dfrac{1}{7}\approx-1.657142857$

$\sf \dfrac{1-10}{5}+ \dfrac{1}{7} \approx-1.657142857$

$\sf -\dfrac{9}{5}+ \dfrac{1}{7}\approx-1.657142857$

$\sf -\dfrac{63}{35}+ \dfrac{5}{35}\approx-1.657142857$

$\sf \dfrac{-63+5}{35}\approx-1.657142857$

$\boxed{\bold{\displaystyle{\clubsuit\ \spadesuit\ \maltese\ -\frac{58}{35} \approx-1.657142857}}}\ \checkmark$

C:=====>

$\sf \dfrac{7}{8}- \dfrac{1}{4}+ \dfrac{2}{3}$

$\sf \dfrac{7}{8}- \dfrac{2}{8}+ \dfrac{2}{3} \approx1.291666667$

$\sf \dfrac{7-2}{8}+ \dfrac{2}{3}\approx1.291666667$

$\sf\dfrac{5}{8}+ \dfrac{2}{3} \approx1.291666667$

$\sf \dfrac{15}{24}+ \dfrac{16}{24} \approx1.291666667$

$\sf \dfrac{15+16}{24} \approx1.291666667$

$\boxed{\bold{\displaystyle{\clubsuit\ \spadesuit\ \maltese\ \frac{31}{24}\approx1.291666667 }}}\ \checkmark$

Explicação passo-a-passo:

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