(3×0,5-2)-(7×0,5+8)=(1,5-2)-(3,5+8)=-0,5-11,5=-12
(3*0,5-2)-(7*0,5+8) = (1,5-2)-(3,5+8) = -0,5-11,5 = -12
(3×0,5-2)-(7×0,5+8)=(1,5-2)-(3,5+8)=-0,5-11,5=-12
(3*0,5-2)-(7*0,5+8) = (1,5-2)-(3,5+8) = -0,5-11,5 = -12