(2x/21)=-(3/21)

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Solution for (2x/21)=-(3/21) equation: 


x in (-oo:+oo)

(2*x)/21 = -(3/21) // + 3/21

(2*x)/21+3/21 = 0

2/21*x+1/7 = 0 // - 1/7

2/21*x = -1/7 // : 2/21

x = -1/7/2/21

x = -3/2

x = -3/2

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