7=5x+2(-7x)

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Solution for 7=5x+2(-7x) equation:


Simplifying
7 = 5x + 2(-7x)

Remove parenthesis around (-7x)
7 = 5x + 2 * -7x

Multiply 2 * -7
7 = 5x + -14x

Combine like terms: 5x + -14x = -9x
7 = -9x

Solving
7 = -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
7 + 9x = -9x + 9x

Combine like terms: -9x + 9x = 0
7 + 9x = 0

Add '-7' to each side of the equation.
7 + -7 + 9x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 9x = 0 + -7
9x = 0 + -7

Combine like terms: 0 + -7 = -7
9x = -7

Divide each side by '9'.
x = -0.7777777778

Simplifying
x = -0.7777777778

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