x-2(7x+21)=-16

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Solution for x-2(7x+21)=-16 equation:


Simplifying
x + -2(7x + 21) = -16

Reorder the terms:
x + -2(21 + 7x) = -16
x + (21 * -2 + 7x * -2) = -16
x + (-42 + -14x) = -16

Reorder the terms:
-42 + x + -14x = -16

Combine like terms: x + -14x = -13x
-42 + -13x = -16

Solving
-42 + -13x = -16

Solving for variable 'x'.

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

Add '42' to each side of the equation.
-42 + 42 + -13x = -16 + 42

Combine like terms: -42 + 42 = 0
0 + -13x = -16 + 42
-13x = -16 + 42

Combine like terms: -16 + 42 = 26
-13x = 26

Divide each side by '-13'.
x = -2

Simplifying
x = -2

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