3x-(1/7)x=120

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Solution for 3x-(1/7)x=120 equation: 


x in (-oo:+oo)

3*x-((1/7)*x) = 120 // - 120

3*x-((1/7)*x)-120 = 0

3*x+(-1/7)*x-120 = 0

20/7*x-120 = 0 // + 120

20/7*x = 120 // : 20/7

x = 120/20/7

x = 42

x = 42

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