Answer:
x = 5.25 + -2.25y
Step-by-step explanation:
4x + 9y = 21
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9y' to each side of the equation.
4x + 9y + -9y = 21 + -9y
Combine like terms: 9y + -9y = 0
4x + 0 = 21 + -9y
4x = 21 + -9y
Divide each side by '4'.
x = 5.25 + -2.25y
No need to simplify. :)
