I need help with this equation.
y + 4y = 6 (1)
x = 9 - 4y (2)
Thanks for the help.
I'm not sure what kind of help you want.
1. 5y = 6
y = 6/5
2. If first equation is connected to second, substitute 6/5 for y and solve for x.
I hope this helps.
I think you have a typo. I'm guessing the first equation should have an x term, instead of two y's.
Thanks for the help. That should have been x + 4 instead of y + 4. Thanks for the help.
To solve this system of equations, you can use the method of substitution. Here's how to do it step by step:
Step 1: Solve one of the equations for one variable in terms of the other variable.
Let's solve equation (2) for x:
x = 9 - 4y
Step 2: Substitute the expression you found for that variable into the other equation.
Now, substitute x = 9 - 4y into equation (1):
y + 4y = 6
Step 3: Simplify and solve for the remaining variable.
Combine like terms on the left side of the equation:
5y = 6
Step 4: Solve for y.
To isolate y, divide both sides of the equation by 5:
y = 6/5 or y = 1.2
Step 5: Substitute the value of y back into one of the original equations to solve for the other variable.
Let's substitute y = 1.2 into equation (2):
x = 9 - 4(1.2)
x = 9 - 4.8
x = 4.2
So, the solution to the system of equations is x = 4.2 and y = 1.2.