3x+10=-4x+31

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Solution for 3x+10=-4x+31 equation: 


x in (-oo:+oo)

3*x+10 = 31-4*x // - 31-4*x

3*x-(-4*x)-31+10 = 0

3*x+4*x-31+10 = 0

7*x-21 = 0 // + 21

7*x = 21 // : 7

x = 21/7

x = 3

x = 3

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