1. ## algebra

solve for:
a+3b=-1
c+3d=3
solve for a,b,c,d

2. Originally Posted by Crystal09
solve for:
a+3b=-1
c+3d=3
solve for a,b,c,d
You can't - there are four unknowns and two equations

3. exactly
somthin's missing here, there (almost) always has to be as many equations as unknowns, and thats always helpful to know.

4. Originally Posted by Crystal09
solve for:
a+3b=-1
c+3d=3
solve for a,b,c,d
You were told here http://www.mathhelpforum.com/math-he...-matrices.html that these equations can't be solved for numerical values of the unknowns.