8/5=(-15-7z)/30

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Solution for 8/5=(-15-7z)/30 equation: 


z in (-oo:+oo)

8/5 = (-(7*z)-15)/30 // - (-(7*z)-15)/30

8/5-((-(7*z)-15)/30) = 0

8/5-((-7*z-15)/30) = 0

(-1*(-7*z-15))/30+8/5 = 0

(-1*5*(-7*z-15))/(5*30)+(8*30)/(5*30) = 0

8*30-1*5*(-7*z-15) = 0

35*z+315 = 0

(35*z+315)/(5*30) = 0

(35*z+315)/(5*30) = 0 // * 5*30

35*z+315 = 0

35*z+315 = 0 // - 315

35*z = -315 // : 35

z = -315/35

z = -9

z = -9

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