1/2(10r+2)-(r-8)

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Solution for 1/2(10r+2)-(r-8) equation: 


r in (-oo:+oo)

(1/2)*(10*r+2)-r+8 = 0

1/2*(10*r+2)-r+8 = 0

1/2*(10*r+2)-r+8 = 0

4*r+1+8 = 0

4*r+9 = 0

4*r+9 = 0

4*r+9 = 0 // - 9

4*r = -9 // : 4

r = -9/4

r = -9/4

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