Question

Determine o valor de cada expressao sabendo que: a = 5/4 , b= 4/5 e c= 0,5

a) a+b+c
b)2a+c-b
c)2b - (a+c)

Answer 1

a) 5/4 + 4/5 + 1/2 = 25/20 + 16/20 + 10/20 = 51/20
b) 2(5/4) + 1/2 - 4/5 = 10/4 + 1/2 - 4/5 = 50/20 + 10/20 - 16/20 = 50/2 - 6/20 =
= 44/20 = 22/10
c) 2(4/5) - (5/4 + 1/2) = 8/5 - (5/4 + 2/4) = 8/5 + 7/4 = 32/20 + 35/20 = 67/20