l 15u+640=55u
Enter Equation or Inequality
Answer
u=16


Steps Explained:

Solve for u

15u + 640 = 55u

Group variables

Group our variables 15u and 55u
subtract 55u from both sides

15u + 640 - 55u = 55u - 55u

Cancel 55u on the right side:

-40u + 640 = 0

Divide each side by 15

15u
15
=
  
640
15

Group constants

Group our constants 640 and 0.
subtract 640 from both sides

-40u + 640 - 640 = 0 - 640

Cancel 640 on the left side:

-40u = -640

Divide each side of the equation by -40

-40u
-40
=
  
-640
-40

u = 16

Final Answer

u=16

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