21-2x/5=4-x

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Solution for 21-2x/5=4-x equation: 


x in (-oo:+oo)

21-((2*x)/5) = 4-x // - 4-x

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

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

3/5*x+17 = 0 // - 17

3/5*x = -17 // : 3/5

x = -17/3/5

x = -85/3

x = -85/3

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