(21-2x)/3=(4x+6)/5

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Solution for (21-2x)/3=(4x+6)/5 equation: 


x in (-oo:+oo)

(21-(2*x))/3 = (4*x+6)/5 // - (4*x+6)/5

(21-(2*x))/3-((4*x+6)/5) = 0

(21-2*x)/3-((4*x+6)/5) = 0

(21-2*x)/3+(-1*(4*x+6))/5 = 0

(5*(21-2*x))/(3*5)+(-1*3*(4*x+6))/(3*5) = 0

5*(21-2*x)-1*3*(4*x+6) = 0

87-22*x = 0

(87-22*x)/(3*5) = 0

(87-22*x)/(3*5) = 0 // * 3*5

87-22*x = 0

87-22*x = 0 // - 87

-22*x = -87 // : -22

x = -87/(-22)

x = 87/22

x = 87/22

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