Question

Determine a soma algébrica sob a forma de fração irredutível.

a) 4/5 + 2 - 1/4

c) 7-( 1- 4/3)

Answer 1

a)$\frac{4}{5}+ \frac{2}{1}- \frac{1}{4} = \frac{16+40-5}{20} = \frac{51}{20}$

c)$\frac{7}{1}-( \frac{1}{1}- \frac{4}{3} ) = \frac{7}{1}-(- \frac{1}{3} ) = \frac{22}{3}$