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C in (-oo:+oo)
1835.4 = (9/5)*C+32 // - (9/5)*C+32
1835.4-((9/5)*C)-32 = 0
(-9/5)*C-32+1835.4 = 0
1803.4-9/5*C = 0 // - 1803.4
-9/5*C = -1803.4 // : -9/5
C = -1803.4/(-9/5)
C = 1001.88888889
C = 1001.88888889
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