The width of a rectangle is 2/3 it's length, l. The width, w of the rectangle is 10 inches. What is the perimeter ? What is the
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standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient
therefore,