28=3(u-4)-8u

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Solution for 28=3(u-4)-8u equation:



28=3(u-4)-8u
We move all terms to the left:
28-(3(u-4)-8u)=0
We calculate terms in parentheses: -(3(u-4)-8u), so:
3(u-4)-8u
We add all the numbers together, and all the variables
-8u+3(u-4)
We multiply parentheses
-8u+3u-12
We add all the numbers together, and all the variables
-5u-12
Back to the equation:
-(-5u-12)
We get rid of parentheses
5u+12+28=0
We add all the numbers together, and all the variables
5u+40=0
We move all terms containing u to the left, all other terms to the right
5u=-40
u=-40/5
u=-8

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