Answer:
Step-by-step explanation:
For any system of equations we can use the method of elimination in order to solve the system:
Let's assume the following system of equations:
(1)
(2)
We need to follow these steps:
Part 1 :"Multiply each equation by a suitable number so that the two equations have the same leading coefficient".
For example we can multiply equation (1) by d and equation (2) by -a and we got this:
(1)
(2)
Part 2: Add the first and the second equation. And after do this we got:
(3)
Part 3: "Solve this new equation for y".
First we take common factor y on the right of the equation (3)
Part 4: "Substitute the valu obtained of y into either Equation 1 or Equation 2 above and solve for x." We can use equation 1 for example and we got: