Solve for x; x+9=18-2x
Answer
x=3
Explanation
x + 9 = 18 -2x
Add 2x to both sides
x + 9 + 2x = 18
Add x and 2x
3x + 9 = 18
Move all terms not containing x to the right side of the equation
3x = 18 – 9
Subtract 9 from 18
3x = 9
Divide each term in 3x = 9 by 3
x = 3.