-15u=20-20u

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Solution for -15u=20-20u equation:



-15u=20-20u
We move all terms to the left:
-15u-(20-20u)=0
We add all the numbers together, and all the variables
-15u-(-20u+20)=0
We get rid of parentheses
-15u+20u-20=0
We add all the numbers together, and all the variables
5u-20=0
We move all terms containing u to the left, all other terms to the right
5u=20
u=20/5
u=4

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