Question

Wyznacz x

m1c1(80-x)=m2c2(x-20)

Answer 1

 

m₁c₁(80-x)=m₂c₂(x-20)

80m₁c₁ - m₁c₁ x= m₂c₂ x - 20 m₂c₂

 m₂c₂ x + m₁c₁ x = 80m₁c₁ + 20 m₂c₂  

x(m₂c₂  + m₁c₁ ) = 80m₁c₁ + 20 m₂c₂  

x= (80m₁c₁ + 20 m₂c₂  ) /(m₂c₂  + m₁c₁ )

x =20(4m₁c₁ +  m₂c₂  )/ (m₂c₂  + m₁c₁ )