6x+6= 3 x − 21 3x−21
Mathematics · Middle School · Thu Feb 04 2021
Answered on
Given:
6x + 6 = 3x - 21
Solve for x.
Solution:
In order to solve for x, we simply need to transpose 3x and 6 to the opposite sides of the equation, hence it must be taken to note that in transposing a number, the sign changes.
6x + 6 = 3x - 21
6x - 3x = -21 - 6
3x = -27
Divide both sides by 3 in order to cancel out 3x, leaving behind x.
3x/3= -27/3
x = -9
Final answer:
x = -9