Download - Equations
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Equation – a math sentence that includes an equal sign
It can be solved
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Variable –
Coefficient –
Constant –
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Variable – a letter or symbol that represents some value or number
Coefficient – the number in front of the variable
Constant – a number by itself
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What is the difference between an expression and an equation?
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Solution – the answer to an equation
When finding the solution your goal is to isolate the given variable
(isolate means to get by itself)
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Keep it, Change it, Opposite (KCO)
What you do to one side you must do to the other
Simplify first then start solving
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We isolate the variable using:
Inverse Operations – operations that cancel each other out
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Operation InverseAddition
Addition
Subtraction
Multiplication
Division
Multiplication by a fraction
Squaring (x2)
Square root (√x)
Cubing (x3)
Cube rooting ( )
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Operation InverseAddition Subtraction
Addition Addition of the opposite
Subtraction Addition
Multiplication Division
Division Multiplication
Multiplication by a fraction
Multiply by the reciprocal
Squaring (x2) Square rooting (√x)
Square root (√x) Squaring (x2)
Cubing (x3) Cube rooting ( )
Cube rooting ( ) Cubing (x3)
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1. Keep it, Change it, Opposite2. Simplify either/both sides of the
equation if needed*Distribute*Combine like terms
3. Move all constants to one side4. Move all variables to the
opposite side5. Solve