3x+28=7x-4

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Solution for 3x+28=7x-4 equation:


Simplifying
3x + 28 = 7x + -4

Reorder the terms:
28 + 3x = 7x + -4

Reorder the terms:
28 + 3x = -4 + 7x

Solving
28 + 3x = -4 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
28 + 3x + -7x = -4 + 7x + -7x

Combine like terms: 3x + -7x = -4x
28 + -4x = -4 + 7x + -7x

Combine like terms: 7x + -7x = 0
28 + -4x = -4 + 0
28 + -4x = -4

Add '-28' to each side of the equation.
28 + -28 + -4x = -4 + -28

Combine like terms: 28 + -28 = 0
0 + -4x = -4 + -28
-4x = -4 + -28

Combine like terms: -4 + -28 = -32
-4x = -32

Divide each side by '-4'.
x = 8

Simplifying
x = 8

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