-15,28-(-34,96)-(24,15)-(-4,51)+(81,05)
1)-15,28-(-34,96)=-15,28+34,96=19,68 2)19,68-24,15= -4,47 3)-4,47-(-4,51)= -4,47+4,51=0,04 4)0,04+81,05=81,09