8(x+8)-21=

Solution for 8(x+8)-21= equation:

Simplifying
8(x + 8) + -21 = 0

Reorder the terms:
8(8 + x) + -21 = 0
(8 * 8 + x * 8) + -21 = 0
(64 + 8x) + -21 = 0

Reorder the terms:
64 + -21 + 8x = 0

Combine like terms: 64 + -21 = 43
43 + 8x = 0

Solving
43 + 8x = 0

Solving for variable 'x'.

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

Add '-43' to each side of the equation.
43 + -43 + 8x = 0 + -43

Combine like terms: 43 + -43 = 0
0 + 8x = 0 + -43
8x = 0 + -43

Combine like terms: 0 + -43 = -43
8x = -43

Divide each side by '8'.
x = -5.375

Simplifying
x = -5.375