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x in (-oo:+oo)
x/28 = 6.5 // - 6.5
x/28-6.5 = 0
1/28*x-6.5 = 0 // + 6.5
1/28*x = 6.5 // : 1/28
x = 6.5/1/28
x = 181.99997816
x = 181.99997816
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