Question

$7x - 3x + 4 = 20$

Explanation:

Step1: Combine like terms

$7x - 3x + 4 = 20$ simplifies to $4x + 4 = 20$

Step2: Isolate the term with x

Subtract 4 from both sides: $4x = 20 - 4$
$4x = 16$

Step3: Solve for x

Divide both sides by 4: $x = \frac{16}{4}$

Answer:

$x = 4$