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Week 16 - Algebra expression (Grade 7 - Maths)
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Which of the following are algebraic expressions? (5x × 2, 7y + 3x, 17×78)
5x × 2, 7y + 3x
Find the Nth term rule for each sequence. (8, 6, 4, 2, 0)
-2n +10
Find the Nth term rule for each sequence. (3, 7, 11, 15, 19)
4n - 1
To make an equation smaller by combining like terms
Simplify
Either a single number or variable, or numbers and variables multiplied together.
Term
Terms whose variables (letters or symbols), and their indices are the same.
Like terms
A group of numbers, symbols and operators (+, -, x) grouped together that show the value of something.
Expression
Says that two things are equal. It will have an equal sign. The values on each side of the equal sign are balanced.
Equation
A number used to multiply a variable.
Coefficient
A quantity that may change within the context of a mathematical problem or experiment.
Variable
A number that does not change.
A constant
a math expression in which one or more values are represented by avariable.
Algebraic expression
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