a+b+7b=10
a=3 b=0.875 3.875
a=4 b=0.75 4.75
a=5 b=0.625 5.625
a=6 b=0.5 6.5
a=7 b=0.375 7.375
a=8 b=0.25 8.25
a=9 b=0.125 9.125
a+b+7b=10
a=3 b=0.875 3.875
a=4 b=0.75 4.75
a=5 b=0.625 5.625
a=6 b=0.5 6.5
a=7 b=0.375 7.375
a=8 b=0.25 8.25
a=9 b=0.125 9.125