Answer: x = 4
Step-by-step explanation:
Solving
9 + 3x = 21
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
1) Add '-9' to each side of the equation.
9 + -9 + 3x = 21 + -9
2) Combine like terms: 9 + -9 = 0
0 + 3x = 21 + -9
3x = 21 + -9
3) Combine like terms: 21 + -9 = 12
3x = 12
4) Divide each side by '3'.
x = 4
5) Simplifying
x = 4
#BaconSquad
Answer: X = 4
Step-by-step explanation:
I took the test, hope this helps! :)
