Question

Efetue e, se possível, simplifique os resultados. Obrigado!
a) 1/2a + 2/3a - 3/6a
b) 1/x+ 3/4y - 1/6xy
c) a/3 + b/a - ab/4²

Answer 1

a)
$\frac{1}{2a}+\frac{2}{3a}-\frac{3}{6a}=\frac{1}{2a}+\frac{2}{3a}-\frac{1}{2a}=\frac{2}{3a}$

b)
$\frac{1}{x}+\frac{3}{4y}-\frac{1}{6xy}=\frac{12y+9x-2}{12xy}$

c)
$\frac{a}{3}+\frac{b}{a}-\frac{ab}{4^2}=\frac{16a^2+48ab-3ab}{48a}$