Hello all,
I just started using Mathematica and am trying to solve this simple system of equations. I get empty set as an answer somehow. I know how to do it with hand but I want to know how to work it out in Mathematica so I can use the software for complicated system of equations. Please help me to understand what's wrong.
It looks like you have 6 equations and 7 unknowns:
x2, x4 == 1.5*x4 == x5}, {x2, x3, x4, x5, y1, w, d}]
which results in
{{x2 -> 7.63771, x3 -> 20.3491, x4 -> 7.63771, x5 -> 11.4566, w -> 700. - 1. y1, d -> 41.3771 - 0.050545 y1}}
Quick guess -- you are using what you intend to be subscripted variables, but in fact are only using "box representation", in other words, your expression for x_5 is not in fact a Symbol.
Retry using x5 for x_5, et cet.
I still get the same empty braces for the answer. :(
