6.2 literal equations.notebook
August 30, 2016
Literal Equations
Ex. 1 Solve.
Equations that contain variables. a) 4x+9y=27 solve for y.
Always highlight what you are solving for. Then solve like a regular equation.
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b) ­3x+9y=18 solve for y
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d) P=C+MC solve for M
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c) 9x­4y=7 solve for y.
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e) S=P+Prt solve for t.
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6.2 literal equations.notebook
What happens with the variables add out (go away)?
August 30, 2016
Ex. 2 Solve.
a) 9x­3(­5+3x)=15
If the variables add out and the statement is true, your answer is true for all real numbers (infinitely many solutions).
If the variables add out and the statement is false, your answer is no solution.
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b) 2(3x+4)­4=9x+4­3x
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Homework:
Page 295 #51,59,61,69,73,75,77
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