
Vasumathi N. answered 04/19/21
Effective Math Tutor . Cater to Various Learning Styles.
x - y = 10----(1)
3x +y =18----(2)
If you are trying to solve this system of equations by the Elimination method, then you must add both the equations and eliminate one of the 2 variables x or y
When both these equations are added, you get a new equation which is 4x =28.
Solve for x.
x =-----
Now you substitute for x in one of the 2 original equations given in the problem and solve for y.
y =-----
There is only one answer and we call it the system solution. It is the ordered pair (x ,y) that makes both the equations true.