Question

1. 1 + 7x = 9 + 5x

Explanation:

Step1: Move like - terms

Subtract $5x$ from both sides and subtract 1 from both sides.
$1 + 7x-5x - 1=9 + 5x-5x - 1$

Step2: Simplify the equation

Simplify both sides of the equation.
$2x=8$

Step3: Solve for x

Divide both sides by 2.
$x = \frac{8}{2}$

Answer:

$x = 4$