7=x-2(2x+1)

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Solution for 7=x-2(2x+1) equation:


Simplifying
7 = x + -2(2x + 1)

Reorder the terms:
7 = x + -2(1 + 2x)
7 = x + (1 * -2 + 2x * -2)
7 = x + (-2 + -4x)

Reorder the terms:
7 = -2 + x + -4x

Combine like terms: x + -4x = -3x
7 = -2 + -3x

Solving
7 = -2 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
7 + 3x = -2 + -3x + 3x

Combine like terms: -3x + 3x = 0
7 + 3x = -2 + 0
7 + 3x = -2

Add '-7' to each side of the equation.
7 + -7 + 3x = -2 + -7

Combine like terms: 7 + -7 = 0
0 + 3x = -2 + -7
3x = -2 + -7

Combine like terms: -2 + -7 = -9
3x = -9

Divide each side by '3'.
x = -3

Simplifying
x = -3

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