x+x+7x+4=80

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Solution for x+x+7x+4=80 equation:


Simplifying
x + x + 7x + 4 = 80

Reorder the terms:
4 + x + x + 7x = 80

Combine like terms: x + x = 2x
4 + 2x + 7x = 80

Combine like terms: 2x + 7x = 9x
4 + 9x = 80

Solving
4 + 9x = 80

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 9x = 80 + -4

Combine like terms: 4 + -4 = 0
0 + 9x = 80 + -4
9x = 80 + -4

Combine like terms: 80 + -4 = 76
9x = 76

Divide each side by '9'.
x = 8.444444444

Simplifying
x = 8.444444444

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