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x-17×5=y×8=z÷2÷3=56÷u=8
(x+y) -(z+u)=


Răspuns :

x-17×5=8. y×8=8. z:2:3=8. 56:u=8
x+85=8. y=8:8 z=8×3×2. u=56:8
x=85-8. y=1. z=24×2. u=7
x=77. z=48

(x+y)-(z+u)=(77+1)-(48+7)=78-55=23

R: 23