Question

a) 3/4 - 1/10
b) 3/4 + 1/2
c) 1/4 + 1/6 - 1/3
d) 2/15 + 0,1
4/9 - 5/6 - 2/3 + 3/2

Answer 1

Ola!

• Nas imagens acima, estão o cálculo do MMC.

$a) \frac{3}{4} - \frac{1}{10} \\ \\ \frac{15 - 2}{20} = \frac{13}{20} \\ \\ \\ b) \frac{3}{4} + \frac{1}{2} \\ \\ \frac{3 + 2}{4} = \frac{5}{4} \\ \\ \\ c) \frac{1}{4} + \frac{1}{2} - \frac{1}{3} \\ \\ \frac{3 + 6 - 4}{12} = \frac{5}{12} \\ \\ \\ d) \frac{2}{15} + 0.1 \\ \\ \frac{2}{15} + \frac{1}{10} \\ \\ \frac{4 + 3}{30} = \frac{7}{30} \\ \\ \\ e) \frac{4}{9} - \frac{5}{6} - \frac{2}{3} + \frac{3}{2} \\ \\ \frac{8 - 15 - 12 + 27}{18} = \frac{8}{18} = \frac{4}{9}$

Espero ter ajudado. Bons estudos!