Question

calcule o valor das expressões algébrica
$\frac{ab + c}{a}$
para a=
$\frac{ - 3}{2}$
b=
$\frac{1}{4}$
c=
$\frac{ - 3}{5}$

Answer 1

$\frac{ab+c}{a} =\frac{-\frac{3}{2}.\frac{1}{4}+(-\frac{3}{5})}{-\frac{3}{2}} =$

Multiplique a.b

$\frac{-\frac{3}{8}-\frac{3}{5}}{-\frac{3}{2}} =\\ \\ mmc numerador=40\\ \\ \frac{\frac{-15-24}{40}}{-\frac{3}{2}} =\frac{-\frac{39}{40}}{-\frac{3}{2}} =\\ \\ -\frac{39}{40} .(-\frac{2}{3})=\\ \\ +\frac{78}{120} \\ \\ simplifique :6\\ \\ resposta=\frac{13}{20}$