How do you solve #3x + 7y = -6# and #x - 2y = 11#?
One way is to use the method of elimination.
Step 1. Enter the equations.
Step 2. Multiply each equation to get the lowest common multiple of the coefficients of one variable.
Multiply Equation 2 by
Step 3. Subtract Equation 3 from Equation 1.
Step 4. Substitute Equation 4 in Equation 1.
Solution: The solution that satisfies both equations is
Check: Substitute the values of
Our solution is correct.