Answer:
x = 5 + 3y
Step-by-step explanation:
To isolate x in the equation 3x - 9y = 15, we can follow these steps:
1. The goal is to isolate x on one side of the equation.
2. Start by moving the term containing y to the other side of the equation.
3x - 9y + 9y = 15 + 9y
This cancels out the -9y term on the left side.
3. Simplify the equation:
3x = 15 + 9y
4. Now, to isolate x, we need to get rid of the coefficient 3 in front of x.
Divide both sides of the equation by 3:
(3x)/3 = (15 + 9y)/3
This simplifies to:
x = (15 + 9y)/3
5. The equation is now isolated to solve for x.
Simplify the right side of the equation by dividing both terms by 3:
x = 5 + 3y
Therefore, x is isolated and can be represented by the equation x = 5 + 3y.
