=4+(8x+9)

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Solution for =4+(8x+9) equation:


Simplifying
0 = 4 + (8x + 9)

Reorder the terms:
0 = 4 + (9 + 8x)

Remove parenthesis around (9 + 8x)
0 = 4 + 9 + 8x

Combine like terms: 4 + 9 = 13
0 = 13 + 8x

Solving
0 = 13 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
0 + -8x = 13 + 8x + -8x
Remove the zero:
-8x = 13 + 8x + -8x

Combine like terms: 8x + -8x = 0
-8x = 13 + 0
-8x = 13

Divide each side by '-8'.
x = -1.625

Simplifying
x = -1.625

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