80+9x=5(x+20)

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Solution for 80+9x=5(x+20) equation:


Simplifying
80 + 9x = 5(x + 20)

Reorder the terms:
80 + 9x = 5(20 + x)
80 + 9x = (20 * 5 + x * 5)
80 + 9x = (100 + 5x)

Solving
80 + 9x = 100 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
80 + 9x + -5x = 100 + 5x + -5x

Combine like terms: 9x + -5x = 4x
80 + 4x = 100 + 5x + -5x

Combine like terms: 5x + -5x = 0
80 + 4x = 100 + 0
80 + 4x = 100

Add '-80' to each side of the equation.
80 + -80 + 4x = 100 + -80

Combine like terms: 80 + -80 = 0
0 + 4x = 100 + -80
4x = 100 + -80

Combine like terms: 100 + -80 = 20
4x = 20

Divide each side by '4'.
x = 5

Simplifying
x = 5

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