How do you solve #3x-y=1# and #x+y=3#?
I would isolate
into the first:
substitute this back into the second equation:
Gió's method uses the method of substitution.
Here's how to do it by the method of elimination.
Step 1. Enter the equations.
Step 2. Add Equations 1 and 2.**
Step 3. Substitute Equation 3 in Equation 2.
Check: Substitute the values of
The solution is correct.