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(-2/5)*x+8 = 97/15-5*x // - 97/15-5*x
(-2/5)*x-(-5*x)-(97/15)+8 = 0
(-2/5)*x+5*x-97/15+8 = 0
23/5*x+23/15 = 0 // - 23/15
23/5*x = -23/15 // : 23/5
x = -23/15/23/5
x = -1/3
x = -1/3
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