c, (63-171)-(111-205)-(-222+310)
=63-171-111+205+222-310
=-102
d, - {140-[207-(190-300)-(-101)]}
=- {140-[207-190+300+101]}
= -(140-207+190-300-101)
= -140+207-190+300+101
=278
ta co :
c.63-171-111+205+222-310=-102
d.-{140-[207-190+300+101]}=-{140-207+190-300-101}=-140 +207-190+300+101=278
tích cho mình nha cảm ơn nhìu