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x in (-oo:+oo)
(2.1/8.2)*x = 183 // - 183
(2.1/8.2)*x-183 = 0
0.25609756*x-183 = 0 // + 183
0.25609756*x = 183 // : 0.25609756
x = 183/0.25609756
x = 714.57143129
x = 714.57143129
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