3x + 9 = 7x - 11
How do I solve this?
You said subtract three x from each side, then all eleven to both side then divide each side by 10?
I'm confused...
If you followed those instructions, even without the typos, I'm sure you were confused!
3x + 9 = 7x - 11
subtract 3x:
9 = 4x-11
add 11:
20 = 4x
divide by 4:
5 = x
thanks!
I apologize for any confusion. To solve the equation 3x + 9 = 7x - 11, you need to simplify the equation by performing operations to isolate the variable (x) on one side of the equation.
Here's a step-by-step explanation of how to solve the equation correctly:
1. Start by subtracting 3x from both sides of the equation to eliminate the variable term on one side:
3x + 9 - 3x = 7x - 11 - 3x
Simplifying the equation gives: 9 = 4x - 11
2. Next, add 11 to both sides of the equation to isolate the term with the variable:
9 + 11 = 4x - 11 + 11
This simplifies to: 20 = 4x
3. Finally, divide both sides of the equation by the coefficient (4) in front of x to solve for x:
20 ÷ 4 = (4x) ÷ 4
The equation becomes: 5 = x, or x = 5
So, the solution to the equation is x = 5.
In summary, to solve this equation, you need to perform operations such as addition, subtraction, multiplication, and division to isolate the variable and find the value of x.