Alexandra+and+Ivanne

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by: Alexandra Cruz and Ivanne Umali

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A branch of mathematics that substitutes letters for numbers. An algebraic equation represents a scale, what is done on one side of the scale with a number is also done to the other side of the scale. The numbers are the constants. Algebra can include real numbers, complex numbers, matrices, vectors etc. Moving from Arithmetic to Algebra will look something like this: Arithmetic: 3 + 4 = 3 + 4 in Algebra it would look like: x + y = y +.

Unproject
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Algebra is a branch of mathematics that substitutes letters for numbers. An algebraic expression represents a scale, what is done on one side of the scale with the number is also done to the other side of the scale. In simple math, an addition would look like this: 3 + 4 = 4 + 3. In algebra, an addition would look like this: x + y = y + x.

Algebraic Vocabulary A variable is a letter that represents a number (any number). Examples are x and n. An expression has many possible answers. An example would be n + 7. An equation has an equal sign and has only one possible answer. Example: x + 7 = 10 = 3 + 7 = 10 Terms - variable and integer.

Algebraic Expressions

Adding one more than one-eight = 1/8 + 1

Subtracting seven decreased by a number = 7 - n

Multiplication two times a number = 2n

Division a number divided by three = n/3

Adding n + 4 = 6 + 3 1. Simplify 2. Isolate the variable 3. Cancel the integer using its opposite to make zero pairs 4. Balance 5. Substitute to check

Subtraction 1. Isolate the variable 2. Cancel the integer 3. Balance 4. Substitute to check

Multiplying 1. Isolate the variable and cancel the integer 2. Balance 3. Substitute to check

Dividing 1. Isolate the variable, cancel the integer, and balance. 2. Substitute to check