1. The problem statement, all variables and given/known data qa+2qb=10.158 4qa+6qb=200d 2qa+(7/2)qb=c 2qa+3qb=100d 3.76qc+100d=89.842 Solve for a,b,c,d,q 2. Relevant equations 3. The attempt at a solution I desperately want to avoid solving this system of equations by hand. This if for a chemical engineering class and solves a molecular balance of a chemical process. This seems soooo tedious, I would like to find a program to solve it. All of the solvers I have found seem to not work for equations where I have the unkowns multiplied by each other and will only let me equations like 5a + 6b ... not 5qa + 6bc ... HELP! Any suggestions?