How do you solve #4x + 2y = 10# for y?
y = 5-2x
Start by moving everything to the right side of the equation so that the term with Y is by itself.
4x + 2y = 10
Subtract 4x from both sides to get:
2y = 10 - 4x
Next, we need to get Y by itself. We can do this by dividing by two. Remember that what we do to one side we have to do to the other.
Now that Y is by itself you have your answer.
y = 5 - 2x
Rearrange the equation to get y on one side.
Remember that an equation will remain equal if you do the same thing on both sides. If you subtract both sides by
Then divide both sides by 2 and you get y on the left hand side
Note that this can be simplified to
If the value of x is known you can find the value of y using this equation.