John's Equation solver.
Linear Equations
Problem Number 1
|
5 + 4x = x
9 2
|
 |
|
90 + 8x = 18x
|
First step is to multiply
the whole problem by 18. The reason for doing this is to eliminate
the denominator.
|
|
90 = 10x
|
The next step is to
subtract 8x from each side to eliminate the variable on the left side.
|
|
9 = x
|
The last step is to
divide both sides by 10 so you will isolate the variable and you will get
the final answer.
|
How about another problem?
Literal Equations
Problem number 2
P = RA
L
We are solving for: A
L P =RA
Multiply both sides
by R to get rid of the fraction.
L P = A
R
Divide both sides
by R to get the variable A by itself.
L P = A
R
Is the final equation
for A
Smile
you did another one!
Great Job!
It’s
ok if you don't understand
an equation that is why I am here to help you.
Finding the equation of a line using points
Problem number 3
| Find the equation for a line that passes
through points (1,3), and (3,18). |
|
|
18-3
3-1 |
First you find the change in Y over the change
in X to determined slope. |
| Y= 15 X + B
2 |
Put the slope in Y-intercept form. |
Hang on you're almost done.
The rest of problem number 3.
|
3 = 15 * 3 + B 2 |
You plug in the coordinates for X, Y and solve
ofB |
| Y = 15 X + -9 2 2 |
The final step is to find the equation for
the line, which is to the left. |
The doctor says you can now do equations for yourself with no help.
here