5x+7(105+x)=343

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Solution for 5x+7(105+x)=343 equation: 


Simplifying
5x + 7(105 + x) = 343
5x + (105 * 7 + x * 7) = 343
5x + (735 + 7x) = 343

Reorder the terms:
735 + 5x + 7x = 343

Combine like terms: 5x + 7x = 12x
735 + 12x = 343

Solving
735 + 12x = 343

Solving for variable 'x'.

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

Add '-735' to each side of the equation.
735 + -735 + 12x = 343 + -735

Combine like terms: 735 + -735 = 0
0 + 12x = 343 + -735
12x = 343 + -735

Combine like terms: 343 + -735 = -392
12x = -392

Divide each side by '12'.
x = -32.66666667

Simplifying
x = -32.66666667

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