7х+3=30-2х

To solve the equation \(7x + 3 = 30 - 2x\), we need to isolate \(x\) on one side of the equation.

First, let's add \(2x\) to both sides of the equation to get rid of \(2x\) on the right side:

\(7x + 3 + 2x = 30 - 2x + 2x\)

This simplifies to:

\(9x + 3 = 30\)

Next, subtract 3 from both sides to isolate \(9x\):

\(9x + 3 - 3 = 30 - 3\)

This simplifies to:

\(9x = 27\)

Finally, divide by 9 to solve for \(x\):

\(x = \frac{27}{9}\)

So, \(x = 3\).

Therefore, the solution to the equation is \(x = 3\).