28+X=3(11+X)

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Solution for 28+X=3(11+X) equation: 


Simplifying
28 + X = 3(11 + X)
28 + X = (11 * 3 + X * 3)
28 + X = (33 + 3X)

Solving
28 + X = 33 + 3X

Solving for variable 'X'.

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

Add '-3X' to each side of the equation.
28 + X + -3X = 33 + 3X + -3X

Combine like terms: X + -3X = -2X
28 + -2X = 33 + 3X + -3X

Combine like terms: 3X + -3X = 0
28 + -2X = 33 + 0
28 + -2X = 33

Add '-28' to each side of the equation.
28 + -28 + -2X = 33 + -28

Combine like terms: 28 + -28 = 0
0 + -2X = 33 + -28
-2X = 33 + -28

Combine like terms: 33 + -28 = 5
-2X = 5

Divide each side by '-2'.
X = -2.5

Simplifying
X = -2.5

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