Question

calcule o valor das expressões numéricas: 5/4×(-4/8)+2×(+1/4)
b)7-5×(1,5)
c)(-2/3)×(+3/10)-(1/2)×(-1/3)
d)(-0,28)×(+1,5)-(+0,7)×(-0,72)
e)0,625-(+0,84)×(+0,6)

Answer 1

5/4x(-4/8)+2x(+1/4)
-20/32+2x(+1/4)
-18/32x(+1/4)
-18/128
depois simplifique