7x+3+7x+2+7x=399

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Solution for 7x+3+7x+2+7x=399 equation:


Simplifying
7x + 3 + 7x + 2 + 7x = 399

Reorder the terms:
3 + 2 + 7x + 7x + 7x = 399

Combine like terms: 3 + 2 = 5
5 + 7x + 7x + 7x = 399

Combine like terms: 7x + 7x = 14x
5 + 14x + 7x = 399

Combine like terms: 14x + 7x = 21x
5 + 21x = 399

Solving
5 + 21x = 399

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 21x = 399 + -5

Combine like terms: 5 + -5 = 0
0 + 21x = 399 + -5
21x = 399 + -5

Combine like terms: 399 + -5 = 394
21x = 394

Divide each side by '21'.
x = 18.76190476

Simplifying
x = 18.76190476

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