15x-20(-4/15+5/15x)=7

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Solution for 15x-20(-4/15+5/15x)=7 equation:


x in (-oo:+oo)

15*x-(20*((5/15)*x-4/15)) = 7 // - 7

15*x-(20*((5/15)*x-4/15))-7 = 0

15*x-20*((5/15)*x-4/15)-7 = 0

15*x-20*(1/3*x-4/15)-7 = 0

15*x-20*(1/3*x-4/15)-7 = 0

25/3*x-7+16/3 = 0

25/3*x-5/3 = 0

25/3*x-5/3 = 0

25/3*x-5/3 = 0 // + 5/3

25/3*x = 5/3 // : 25/3

x = 5/3/25/3

x = 1/5

x = 1/5

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