Solving Systems by Substitution
Using the substitution method when one variable is given:
Using the substitution method when one variable is given:Using the substitution method when one variable is given:
Using the substitution method when one variable is given:
Step #1: Substitute the value of the given variable into the other equation
Step #2: Solve for other variable by performing the necessary inverse operations
Step #3: Check the solution to make sure it makes both equations true
Step #4: Write your answer as an ordered pair
Solve each system using substitution.
1.)
๎
=
5
๎
๎
โ
1
=
2
๎
2.)
3
๎
โ
2
๎
=
8
๎
=
2
3.)
๎
=
โ
2
๎
2
๎
+
10
=
3
๎
4.)
๎
=
โ
3
๎
2
๎
+
7
+
๎
=
0
5.)
๎
โ
4
๎
=
6
๎
๎
=
0
.
5
6.)
๎
โ
๎
=
โ
2
๎
๎
=
โ
1
7.)
๎
=
โ
8
๎
3
๎
+
๎
=
19
8.)
2
๎
โ
3
๎
=
โ
5
๎
=
โ
2
