# Math Help - Factorising

1. ## Factorising

How to solve the following problem by factorising?

2X+5=11X

This is in the same section as the following one so I need to be able to solve it the same way:

2X^2+5X=3
2X^2+5X-3=0
2X^2+6X-X-3=0
2X(X+3)-1(X+3)=0
(X+3)(2X-1)=0
X=-3 or 1/2

2. Originally Posted by juliak
How to solve the following problem by factorising?

2X+5=11X

This is in the same section as the following one so I need to be able to solve it the same way:

2X^2+5X=3
2X^2+5X-3=0
2X^2+6X-X-3=0
2X(X+3)-1(X+3)=0
(X+3)(2X-1)=0
X=-3 or 1/2
The problem involves a linear equation. There is no common factor. It does not factorise. Solve it as you would any linear equation.

3. in case you didn't understand the previous answer