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Solving Equations-Subtraction Property of Equality
a + 12 = 18
Our goal in solving equations is to
isolate the variable.
a + 12 = 18
We always use opposite operations
when solving equations
The opposite of adding is subtracting.
Solving Equations-Subtraction Property of Equality
Solving Equations-Addition
a + 12 = 18a + 12 – 12 = 18 -12
Solving Equations-Subtraction Property of Equality
We always use opposite operations
when solving equations
The opposite of adding is subtracting.
Solving Equations-Addition
a + 12 = 18a + 12 – 12 = 18 -12
Solving Equations-Subtraction Property of Equality
Balanced the equation by subtracting 12 from
both sides of the equal sign.
a + 12 = 18a + 12 – 12 = 18 -12
a + 0 = 6
Solving Equations-Subtraction Property of Equality
a + 12 = 18a + 12 – 12 = 18 -12
a + 0 = 6a = 6
Solving Equations-Subtraction Property of Equality
Solving Equations-Addition Property of Equality
b - 5 = 8
Our goal in solving equations is to
isolate the variable.
b - 5= 8
We always use opposite operations
when solving equations
Solving Equations-Addition Property of Equality
b - 5 = 8
We always use opposite operations
when solving equations
The opposite of subtracting is adding.
Solving Equations-Addition Property of Equality
Solving Equations-Addition
b - 5 = 8b - 5 + 5 = 8 + 5
Solving Equations-Addition Property of Equality
We always use opposite operations
when solving equations
The opposite of subtracting is adding.
Solving Equations-Addition
b - 5 = 8b - 5 + 5 = 8 + 5
Solving Equations-Addition Property of Equality
Balanced the equation by adding 5 to
both sides of the equal sign.
b - 5 = 8b -5 + 5 = 8 + 5
b + 0 = 13
Solving Equations-Addition Property of Equality
b - 5 = 8b - 5 + 5 = 8 + 5
b + 0 = 13b = 13
Solving Equations-Addition Property of Equality
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