[a-4]x+2x=x-7

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Solution for [a-4]x+2x=x-7 equation:


Simplifying
[a + -4] * x + 2x = x + -7

Reorder the terms:
[-4 + a] * x + 2x = x + -7

Reorder the terms for easier multiplication:
x[-4 + a] + 2x = x + -7
[-4 * x + a * x] + 2x = x + -7

Reorder the terms:
[ax + -4x] + 2x = x + -7
[ax + -4x] + 2x = x + -7

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

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

Solving
ax + -2x = -7 + x

Solving for variable 'a'.

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

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

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

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

Divide each side by 'x'.
a = -7x-1 + 3

Simplifying
a = -7x-1 + 3

Reorder the terms:
a = 3 + -7x-1

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