105=7x+7(x-7)

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Solution for 105=7x+7(x-7) equation:


Simplifying
105 = 7x + 7(x + -7)

Reorder the terms:
105 = 7x + 7(-7 + x)
105 = 7x + (-7 * 7 + x * 7)
105 = 7x + (-49 + 7x)

Reorder the terms:
105 = -49 + 7x + 7x

Combine like terms: 7x + 7x = 14x
105 = -49 + 14x

Solving
105 = -49 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
105 + -14x = -49 + 14x + -14x

Combine like terms: 14x + -14x = 0
105 + -14x = -49 + 0
105 + -14x = -49

Add '-105' to each side of the equation.
105 + -105 + -14x = -49 + -105

Combine like terms: 105 + -105 = 0
0 + -14x = -49 + -105
-14x = -49 + -105

Combine like terms: -49 + -105 = -154
-14x = -154

Divide each side by '-14'.
x = 11

Simplifying
x = 11

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