（ただし１と２を合せて１２のような使い方は出来ません。）
73個の解法が見つかりました。
(((7+9)÷1)-6)=10
((1×(7+9))-6)=10
((1×7)+(9-6))=10
((1×7)-(6-9))=10
((1×9)+(7-6))=10
((1×9)-(6-7))=10
((1+9)×(7-6))=10
((1+9)÷(7-6))=10
((1-6)×(7-9))=10
((6-1)×(9-7))=10
((7+(1×9))-6)=10
((7+(9-6))÷1)=10
((7+(9÷1))-6)=10
((7+9)-(1×6))=10
((7+9)-(6÷1))=10
((7-(6-9))÷1)=10
((7-6)×(1+9))=10
((7-6)+(1×9))=10
((7-6)+(9÷1))=10
((7-9)×(1-6))=10
((7÷1)+(9-6))=10
((7÷1)-(6-9))=10
((9+(1×7))-6)=10
((9+(7-6))÷1)=10
((9+(7÷1))-6)=10
((9-(6-7))÷1)=10
((9-6)+(1×7))=10
((9-6)+(7÷1))=10
((9-7)×(6-1))=10
((9÷1)+(7-6))=10
((9÷1)-(6-7))=10
(1×((7+9)-6))=10
(1×(7+(9-6)))=10
(1×(7-(6-9)))=10
(1×(9+(7-6)))=10
(1×(9-(6-7)))=10
(1+(9×(7-6)))=10
(1+(9÷(7-6)))=10
(1-(9×(6-7)))=10
(1-(9÷(6-7)))=10
(7+((1×9)-6))=10
(7+((9-6)÷1))=10
(7+((9÷1)-6))=10
(7+(1×(9-6)))=10
(7+(9-(1×6)))=10
(7+(9-(6÷1)))=10
(7-((1×6)-9))=10
(7-((6-9)÷1))=10
(7-((6÷1)-9))=10
(7-(1×(6-9)))=10
(7-(6-(1×9)))=10
(7-(6-(9÷1)))=10
(9+((1×7)-6))=10
(9+((1+6)÷7))=10
(9+((7-1)÷6))=10
(9+((7-6)÷1))=10
(9+((7÷1)-6))=10
(9+(1×(7-6)))=10
(9+(1÷(7-6)))=10
(9+(6÷(7-1)))=10
(9+(7-(1×6)))=10
(9+(7-(6÷1)))=10
(9+(7÷(1+6)))=10
(9-((1×6)-7))=10
(9-((1-7)÷6))=10
(9-((6-7)÷1))=10
(9-((6÷1)-7))=10
(9-(1×(6-7)))=10
(9-(1÷(6-7)))=10
(9-(6-(1×7)))=10
(9-(6-(7÷1)))=10
(9-(6÷(1-7)))=10