Algebra
SIMULTANEOUS EQUATIONS
Example:
Solve the following system of equations using substitution.
5x + 6y = 12
3x + 5y = 3
Solution:
Step 1.
Solve the first equation for x.
5x
6y
12
5x
12
6y
5x
5
12
6y
5
x
12
5
6y
5
Step 2.
Substitute this value of x into the second equation.
3x
5y
3
3
12
5
6y
5
5y
3
Rev. 0
Page 35
MA-02
