Answer:
r = 9
EF = 55
Explanation:
9r - 6 = 8r + 3
9r - 8r = 3 + 6
4r + 19 = 4(9) + 19 = 36 + 19 = 55
The value of r is 9 and the length of segment EF is 55 units. Opposite sides are equal. Hence, the value of r is 9 and the length of segment EF is 55 units.
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