=4(x+4)+5(x+1)

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Solution for =4(x+4)+5(x+1) equation:


Simplifying
0 = 4(x + 4) + 5(x + 1)

Reorder the terms:
0 = 4(4 + x) + 5(x + 1)
0 = (4 * 4 + x * 4) + 5(x + 1)
0 = (16 + 4x) + 5(x + 1)

Reorder the terms:
0 = 16 + 4x + 5(1 + x)
0 = 16 + 4x + (1 * 5 + x * 5)
0 = 16 + 4x + (5 + 5x)

Reorder the terms:
0 = 16 + 5 + 4x + 5x

Combine like terms: 16 + 5 = 21
0 = 21 + 4x + 5x

Combine like terms: 4x + 5x = 9x
0 = 21 + 9x

Solving
0 = 21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
0 + -9x = 21 + 9x + -9x
Remove the zero:
-9x = 21 + 9x + -9x

Combine like terms: 9x + -9x = 0
-9x = 21 + 0
-9x = 21

Divide each side by '-9'.
x = -2.333333333

Simplifying
x = -2.333333333

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