Mathematics, 07.05.2020 00:04, jessicaisbaehood

Figure CDEF is a parallelogram.

Parallelogram C D E F is shown. The length of F C is 10 r minus 20, the length of C D is 2 r + 12, and the length of D E is 6 r.

What is the value of r?

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Figure CDEF is a parallelogram.

Parallelogram C D E F is shown. The length of F C is 10...