equal2.in ((6 +1)-6-a-8-( 1-(a +8))-(9999 -9990)- 3
equal3.in ((a +1)-a-8-7-( 1-(8 +7))-(9999 -9990)- 3
equal4.in ((6 +1)-6-3-8-( 1-(3 +8))-(9999 -9990)- 3
equal4.in ((a+6)^2 - 4*a*6))^10^5 +(a -a)^10^10^10^10^10^10
equal5.in ((6 +1)-6-a-8-( 1-(a +8))-(9999 -9990)- 3
equal5.in ((6+9)^2 - 4*6*9))^7 +(6 -6)^10
equal6.in ((a +1)-a-8-7-( 1-(8 +7))-(9999 -9990)- 3
equal6.in ((6+9)^2 - 4*6*9)- 10)^10^5 +(6 -6)^10^10^10^10^10
equal7.in ((6 +1)-6-3-8-( 1-(3 +8))-(9999 -9990)- 3
equal7.in ((a+6)^2 - 4*a*6))^2 +(a -a)^9
equal8.in ((a +1)-a-8-7-( 1-(8 +7))-(9999 -9990)- 3
equal8.in ((6+9)^2 - 4*6*9))^5 +(6 -6)^10^10^10^10^10^10
equal9.in ((6 +1)-6-3-8-( 1-(3 +8))-(9999 -9990)- 3
equal9.in ((a+6)^2 - 4*a*6))^5 +(a -a)^10^7