Question

On the right side, give a reason to justify each step made on the left

Answer 1

Given that: step 1

`3x+12=8x-18`

step 2: subtract 3x both side

`\begin{gathered} 3x+12-3x=8x-3x-18 \\ 12=5x-18 \end{gathered}`

Step 3: Add 18 both side:

`\begin{gathered} 12+18=5x-18+18 \\ 30=5x \end{gathered}`

Step 4: divide both side by 5

`\begin{gathered} (30)/(5)=(5x)/(5) \\ 6=x \end{gathered}`

Step:6 The value of x is:

x=6