3x+9=-5x+105

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Solution for 3x+9=-5x+105 equation: 


x in (-oo:+oo)

3*x+9 = 105-5*x // - 105-5*x

3*x-(-5*x)-105+9 = 0

3*x+5*x-105+9 = 0

8*x-96 = 0 // + 96

8*x = 96 // : 8

x = 96/8

x = 12

x = 12

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