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SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION. #1. SOLVE one equation for the easiest variable a. Isolated variable b. Leading Coefficient of One #2. SUBSTITUTE.

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Presentation on theme: "SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION. #1. SOLVE one equation for the easiest variable a. Isolated variable b. Leading Coefficient of One #2. SUBSTITUTE."— Presentation transcript:

1 SOLVING SYSTEMS OF EQUATIONS BY SUBSTITUTION

2 #1. SOLVE one equation for the easiest variable a. Isolated variable b. Leading Coefficient of One #2. SUBSTITUTE equation from #1 into second equation and solve for the other variable #3. SUBSTITUTE value from #2 into revised equation from #1 and solve STEPS

3 #1. Solve the system of equations using substitution y = x + 1 3x + y = 9 EXAMPLES

4 #2. Solve the system of equations using substitution 6x + 3y = 12 3x + y = 5 EXAMPLES

5 #3. Solve the system of equations using substitution 2x + y = 4 3x - 5y = 6 EXAMPLES

6 #4. Solve the system of equations using substitution 2x - y = 6 -3x + 2y = -8 EXAMPLES

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