A + X = B
AX = B
AX + B = C
AX + B = CX + D
A ( B + X ) = C
A ( B + X ) = C ( D + X )
A ( BX + C ) = D ( EX + F )
AX / B = C
A / BX = C
AX / B = C / D
A / BX = C/ D
A ( B + X ) / D = C/ E
A ( BX + C ) / D = G ( EX + F) / H
A ( B + X ) / E + F = C ( D + X )
A X) / J + BX / K = C / E