12r + 4 = 112, 12r = 108, r = 9
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49 plus 56 plus 112 equals 217.
(3r - 2)(3r - 2) or (3r - 2) squared.
It is 112/4 = 28
1 plus 1 plus 1 plus 1 equals 1 times 4. 1 times 4 equals 4. 4 minus 4 equals 0. 0
-4 plus 10 equals 6.