20-7(3u+8)+(-8u)=

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Solution for 20-7(3u+8)+(-8u)= equation:


Simplifying
20 + -7(3u + 8) + (-8u) = 0

Reorder the terms:
20 + -7(8 + 3u) + (-8u) = 0
20 + (8 * -7 + 3u * -7) + (-8u) = 0
20 + (-56 + -21u) + (-8u) = 0

Combine like terms: 20 + -56 = -36
-36 + -21u + (-8u) = 0

Combine like terms: -21u + (-8u) = -29u
-36 + -29u = 0

Solving
-36 + -29u = 0

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '36' to each side of the equation.
-36 + 36 + -29u = 0 + 36

Combine like terms: -36 + 36 = 0
0 + -29u = 0 + 36
-29u = 0 + 36

Combine like terms: 0 + 36 = 36
-29u = 36

Divide each side by '-29'.
u = -1.24137931

Simplifying
u = -1.24137931

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