Question

Calcule os valores de x.

a) x ÷ (-3) = +1

b) (-36) ÷ x = -12

c) x ÷ (-5) = +15

d) 90 ÷ x = +10

Answer 1

Resolução da questão, veja:

Letra “A”:

$\mathsf{\dfrac{x}{-3} = 1}}\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\mathsf{x= -3.}}}}}}}}}}}}}}$

Letra “B”:

$\mathsf{\dfrac{-36}{x} = -12}}\\\\\\\ \mathsf{-12x = -36}}\\\\\\\ \mathsf{x=\dfrac{-36}{-12}}\\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{\mathsf{x= 3.}}}}}}}}}}}}}}}}}}}}$

Letra “C”:

$\mathsf{\dfrac{x}{-5} = 15}}\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{\mathsf{x = -75.}}}}}}}}}}}}}}}}}$

Letra “D”:

$\mathsf{90+x = 10}}\\\\\\\ \mathsf{x = 10 - 90}}\\\\\\\\ \large\boxed{\boxed{\boxed{\boxed{\boxed{\mathsf{x = -80.}}}}}}}}}}}}}}}}}$

Espero que te ajude '-'