-2(4u-1)-(u+8)=-1

Solution for -2(4u-1)-(u+8)=-1 equation:

Simplifying
-2(4u + -1) + -1(u + 8) = -1

Reorder the terms:
-2(-1 + 4u) + -1(u + 8) = -1
(-1 * -2 + 4u * -2) + -1(u + 8) = -1
(2 + -8u) + -1(u + 8) = -1

Reorder the terms:
2 + -8u + -1(8 + u) = -1
2 + -8u + (8 * -1 + u * -1) = -1
2 + -8u + (-8 + -1u) = -1

Reorder the terms:
2 + -8 + -8u + -1u = -1

Combine like terms: 2 + -8 = -6
-6 + -8u + -1u = -1

Combine like terms: -8u + -1u = -9u
-6 + -9u = -1

Solving
-6 + -9u = -1

Solving for variable 'u'.

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

Add '6' to each side of the equation.
-6 + 6 + -9u = -1 + 6

Combine like terms: -6 + 6 = 0
0 + -9u = -1 + 6
-9u = -1 + 6

Combine like terms: -1 + 6 = 5
-9u = 5

Divide each side by '-9'.
u = -0.5555555556

Simplifying
u = -0.5555555556