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Level 187

Solving One-Step Equations


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x = 6
x + 3 = 9
Subtracting
The opposite of adding.
x = 1
x - 11 = -10
Adding
Moving right/up on the number line.
Expressions
A mathematical statement that contains variable, constant and operation.
Equations
A mathematical statement that contains variables, constant, operations and equal sign.
x = -39
x + 23 = - 16
x = 9
x + 6 = 15
exponent
A mathematical notation indicating the number of times a quantity is multiplied by itself
Base
the number that is written with an exponent
Variable
an alphabetic character representing a number, called the value, which is either arbitrary or not fully specified or unknown. It is usually a letter like x or y.
constant
A quantity that does not change.
Evaluate
To find the value of a mathematical expression.
Answer: 13
Evaluate "3x - 2y" when x = 5 and y = 1
5 - x
Translate "a number x less than 5" in algebraic symbols.