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a square has a perimeter of 6x - 20 units. What is the value of x?

Sagot :

Perimeter - add the length of all side together.
Square - all sides are equal

In your question: square with a side of x, perimeter would be x + x + x + x = 4x
4x = 6x - 20

Solve for x. This is basic Algebra, you should know this before you get to geometry.