Answer:
10x + 2
Explanation:
The perimeter is the sum of the 4 sides of the rectangle, where opposite sides are equal in measure, thus
perimeter = 3x + 3x + 2x + 1 + 2x + 1 = 10x + 2
10x+2
2×(2x+1+3x)
4x+2+6x
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