7=-8u+5(u+5)

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Solution for 7=-8u+5(u+5) equation:


Simplifying
7 = -8u + 5(u + 5)

Reorder the terms:
7 = -8u + 5(5 + u)
7 = -8u + (5 * 5 + u * 5)
7 = -8u + (25 + 5u)

Reorder the terms:
7 = 25 + -8u + 5u

Combine like terms: -8u + 5u = -3u
7 = 25 + -3u

Solving
7 = 25 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
7 + 3u = 25 + -3u + 3u

Combine like terms: -3u + 3u = 0
7 + 3u = 25 + 0
7 + 3u = 25

Add '-7' to each side of the equation.
7 + -7 + 3u = 25 + -7

Combine like terms: 7 + -7 = 0
0 + 3u = 25 + -7
3u = 25 + -7

Combine like terms: 25 + -7 = 18
3u = 18

Divide each side by '3'.
u = 6

Simplifying
u = 6

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