A like term of 5x is any term that has the same variable raised to the same power. For example, 3x or -2x are like terms of 5x because they both contain the variable x raised to the first power. Like terms can be combined through addition or subtraction, while terms with different variables or powers cannot be combined.
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5x 5 is the coefficient and x is the variable.
The last one is an example of like terms.
x = 1
5x - 3 + x - 9 = 5x Bring like terms together of the left side: 5x + x - 3 - 9 = 5x Combine like terms: 6x - 12 = 5x Add 12 to both sides: 6x = 5x + 12 Subtract 5x from both sides: x = 12
It is: 2x and 5x are like terms Addition: 2x+5x = 7x Multiplication: 2x*5x = 10x2