小猪妈妈给小猪哥哥7个苹果，给小猪弟弟8个苹果，这时隔壁的小猪花花过来玩，要使它们三个的苹果个数同样多，那么小猪哥哥和小猪弟弟各应给小猪花花几个苹果?

6-3{#blank#}1{#/blank#}9    10-4{#blank#}2{#/blank#}8    7+0{#blank#}3{#/blank#}7     4+4{#blank#}4{#/blank#}9

9-3{#blank#}5{#/blank#}5     2+4{#blank#}6{#/blank#}8    8-2{#blank#}7{#/blank#}4     5-2{#blank#}8{#/blank#}3

2+{#blank#}1{#/blank#}=7      8-{#blank#}2{#/blank#}=3        {#blank#}3{#/blank#}+1=10

9-{#blank#}4{#/blank#}=5      6+{#blank#}5{#/blank#}=10       4-{#blank#}6{#/blank#}=1