x+3x-40=48

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Solution for x+3x-40=48 equation:


Simplifying
x + 3x + -40 = 48

Reorder the terms:
-40 + x + 3x = 48

Combine like terms: x + 3x = 4x
-40 + 4x = 48

Solving
-40 + 4x = 48

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 4x = 48 + 40

Combine like terms: -40 + 40 = 0
0 + 4x = 48 + 40
4x = 48 + 40

Combine like terms: 48 + 40 = 88
4x = 88

Divide each side by '4'.
x = 22

Simplifying
x = 22

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