3x+4=7x+20

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Solution for 3x+4=7x+20 equation:


Simplifying
3x + 4 = 7x + 20

Reorder the terms:
4 + 3x = 7x + 20

Reorder the terms:
4 + 3x = 20 + 7x

Solving
4 + 3x = 20 + 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.
4 + 3x + -7x = 20 + 7x + -7x

Combine like terms: 3x + -7x = -4x
4 + -4x = 20 + 7x + -7x

Combine like terms: 7x + -7x = 0
4 + -4x = 20 + 0
4 + -4x = 20

Add '-4' to each side of the equation.
4 + -4 + -4x = 20 + -4

Combine like terms: 4 + -4 = 0
0 + -4x = 20 + -4
-4x = 20 + -4

Combine like terms: 20 + -4 = 16
-4x = 16

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

Simplifying
x = -4

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