Question

负5分之2+负6分之5-(-4.9)-0.6

Answer 1

原式=-2/5-5/6+4.9-0.6
=-0.4-0.6-5/6+4.9
=-1+4.9-5/6
=3.9-5/6
=3+27/30-25/30
=3+1/15
=3又15分之1