The solution to the equation is

Let's solve the equation

Combine like terms on both sides of the equation:
![\[7x + 3 = -x + 12\]](https://img.qammunity.org/2021/formulas/mathematics/high-school/5zeuagzgm7dpsor45bgmxgbnf8h6mdb7bf.png)
Add
to both sides to isolate the variable term:
![\[8x + 3 = 12\]](https://img.qammunity.org/2021/formulas/mathematics/high-school/6sc52x1oml10f7c9ag2fdiih6urib3jbmw.png)
Subtract 3 from both sides:
![\[8x = 9\]](https://img.qammunity.org/2021/formulas/mathematics/high-school/vbdah2dtwly9ngsulngyz8z0l44k0j031z.png)
Divide both sides by 8 to solve for \(x\):
![\[x = (9)/(8)\]](https://img.qammunity.org/2021/formulas/mathematics/high-school/j2mb0i686wyboi59jufxfqvaux54fkuhpr.png)
So, the solution to the equation is

The following question may be like this:
Solve The Equation: 7x + 3 = 4x -5x + 12