Question

If E=4x-9,FG=3x-10, and EG=27, find the values of X, of EF and FG. PLEASE H E L P thanks :)

Answer 1

I do not believe this is solvable to a numerical answer. You have three equations and four unknowns. If you rearrange your equations with the following:
1a. EG=27
1b. G=27/E
2a. FG=3x-10
2b. F=(3x-10)/G
Combine 1b and 2b
F=(3x-10)/(27/E) -> F=(3x-10)E/27
insert E
F=(3x-10)(4x-9)/27
therefore
\[EF=(3x-10)(4x-9)^2/27\]

Now your equations are the following:
FG=3x-10
E=4x-9
\[EF=(3x-10)(4x-9)^2/27\]

You still have three equations and four unknowns since finding X means finding or knowing E making your four unknowns X, FG, EF, and E. You need another constraining equation.

Also this should probably go in the math group.