How do you solve #x+2y=3# and #3x-y= -5#?
1 Answer
Aug 5, 2015
Explanation:
One way is to use the method of substitution.
Step 1. Enter the equations.
[1]
[2]
Step 2. Solve for one variable in terms of the other.
Solve Equation 2 for
[3]
Step 3. Substitute Equation 3 in Equation 1 and solve for
[4]
Step 4. Substitute Equation 4 in Equation 1:
The solution is
Check:
Substitute the values in Equation 2.
It works!