Question

How many steps are required to solve the equaltion below:
$x-8=2x+9$

Answer 1

Given, $x-8=2x+9$

Step 1: Add 8 to both sides of the equation to eliminate 8 on the left side of the equation.
$\Rightarrow x-8+8=2x+9+8\Rightarrow x=2x+17$

Step 2: Subtract both sides of the equation by $2x$ to eliminate $2x$ on the right side of the equation.
$\Rightarrow x-2x=2x+17-2x$
$\Rightarrow -x=17$

Step 3: Now, multiply both sides by 2 to make the coefficient of $x$ as 1.
$\Rightarrow -x\times -1=17\times 1\Rightarrow x=-17$

3 steps are required to solve the given equation because three mathematical operations are involved.