2 . a-0. 1 = b+ 1a & gt; b
3.a×0. 1=b÷ 10 a=b
4.a÷0. 1=b× 10 a=b
5.b/a is the true score a >;; b
6.c/a=c/b(a is not equal to 0, and B is not equal to 0), and A = B.