Question

aplique a propriedade distributiva e calcule

Answer 1

a) $-\frac{12}{15} + \frac{12}{12} = -\frac{12}{15} +1= \frac{-12+15}{15} = \frac{3}{15} = \frac{1}{5}$

b) 3 + 1,2- 2,4=1,8

c) $\frac{28}{7} - \frac{7}{7} + \frac{49}{5}= \frac{21}{7}+ \frac{49}{5}=3+ \frac{49}{5}= \frac{15+49}{5} = \frac{64}{5}$

d) (-18-27+36) = -9