3x+x-3=400

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Solution for 3x+x-3=400 equation:


Simplifying
3x + x + -3 = 400

Reorder the terms:
-3 + 3x + x = 400

Combine like terms: 3x + x = 4x
-3 + 4x = 400

Solving
-3 + 4x = 400

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 4x = 400 + 3

Combine like terms: -3 + 3 = 0
0 + 4x = 400 + 3
4x = 400 + 3

Combine like terms: 400 + 3 = 403
4x = 403

Divide each side by '4'.
x = 100.75

Simplifying
x = 100.75

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