=9x-4(2x+5)

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Solution for =9x-4(2x+5) equation:


Simplifying
0 = 9x + -4(2x + 5)

Reorder the terms:
0 = 9x + -4(5 + 2x)
0 = 9x + (5 * -4 + 2x * -4)
0 = 9x + (-20 + -8x)

Reorder the terms:
0 = -20 + 9x + -8x

Combine like terms: 9x + -8x = 1x
0 = -20 + 1x

Solving
0 = -20 + 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
0 + -1x = -20 + 1x + -1x
Remove the zero:
-1x = -20 + 1x + -1x

Combine like terms: 1x + -1x = 0
-1x = -20 + 0
-1x = -20

Divide each side by '-1'.
x = 20

Simplifying
x = 20

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