Question

determine o valor da expressão a seguir: (-2/5) × 0,6 × 5/8 × (-1,4) ?

Answer 1

(-2/5)x(0,6)x5/8x(-1,4)=
(-2/5)x(6/10)x5/8x(-14/10)=
(-2/5)x(3/5)x5/8x(-7/5)=
-6/25x5/8x(-7/5)=
-30/200x-7/5=
+210/1000=
+21/100=
+0,21