Question

Si a = 1/2 ; b =-1/4 ; c = 2/3 encuentra el valor de cada expresión

-5 c + 3 4/5 b - (-4 a) + 4 1/2 c + (-5 b) - 0,6 c = ???

Answer 1

Remplazo los valores:
-5(2/3)+3(4/5)(-1/4)-(-4(1/2))+4(1/2)(2/3)+(-5(-1/4))-6/10(2/3)
Simplificas
-10/3-3/5-(-2)+4(1/3)+5(1/4)-2/5
-10/3-3/5+2+4/3+5/4-2/5
Rpta: 1/4

Answer 2

-5(2/3)+(19/5)(-1/4)-(-4.1/2)+9/2(2/3)+(-5.-1/4)-(-3/5)(2/3)=
Despejamos: - 10/3+(-19/20)-(-2)+3+(5/4)-(-2/5) =Despejamos =-10/3-19/20+2+3+5/4+2/5
-10/3-19/20+5+5/4+2/5 =agrupamos para resolver =(-10/3+5/4)+5+(2/5-19/20)
(-40+15/12)+5+(40-95/100)
-25/12+5+(-55/100) =-25/12+5-11/20
-25/12-11/20+5 = ( - 500-132/240)+5
(-632/240)+5 (-316/120)+5
(-158/60)+5 (-79/30)+5 =(-79+150/30)=
71/30.