Question

1) (-2/3+(+6,4/5))+(-5/6+(-2,3))

Answer 1

2/3+6 4/5=6 -10-12/15=6 2/15-5/6+2 3/10=2 -15+9/30=-2 34/30=3 4/30=3 2/156 2/15-(-3 2/15)=3