SIMULTANEOUS EQUATIONS
Algebra
Step 2.
Set the two values for x equal to each other.
12
6y
5
3
5y
3
Step 3.
Solve the resulting equation for y.
12
6y
5
3
5y
3
(3)(5)12
6y
5
3
5y
3
(3)(5)
3(12
6y)
5(3
5y)
36
18y
15
25y
25y
18y
15
36
7y
21
7y
7
21
7
y
3
Step 4.
Substitute y = -3 into one of the original equations and solve for x.
5x
6y
12
5x
6(
3)
12
5x
18
12
5x
12
18
5x
30
5x
5
30
5
x
6
MA-02
Page 38
Rev. 0
