Question

qual e o valor numérico da expressão 2x-3y quando x=-3/4ey=-1/6

Answer 1

$\boxed{2x-3y}\\ \\ \boxed{2.\left(-\frac{3}{4}\right)-3.\left(-\frac{1}{6}\right)=-\frac{3}{2}+\frac{1}{2}=\frac{-3+1}{2}=\frac{-2}{2}=-1}$