(X+3)(X+4)=(X+1)(X+2)

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Solution for (X+3)(X+4)=(X+1)(X+2) equation:


Simplifying
(X + 3)(X + 4) = (X + 1)(X + 2)

Reorder the terms:
(3 + X)(X + 4) = (X + 1)(X + 2)

Reorder the terms:
(3 + X)(4 + X) = (X + 1)(X + 2)

Multiply (3 + X) * (4 + X)
(3(4 + X) + X(4 + X)) = (X + 1)(X + 2)
((4 * 3 + X * 3) + X(4 + X)) = (X + 1)(X + 2)
((12 + 3X) + X(4 + X)) = (X + 1)(X + 2)
(12 + 3X + (4 * X + X * X)) = (X + 1)(X + 2)
(12 + 3X + (4X + X2)) = (X + 1)(X + 2)

Combine like terms: 3X + 4X = 7X
(12 + 7X + X2) = (X + 1)(X + 2)

Reorder the terms:
12 + 7X + X2 = (1 + X)(X + 2)

Reorder the terms:
12 + 7X + X2 = (1 + X)(2 + X)

Multiply (1 + X) * (2 + X)
12 + 7X + X2 = (1(2 + X) + X(2 + X))
12 + 7X + X2 = ((2 * 1 + X * 1) + X(2 + X))
12 + 7X + X2 = ((2 + 1X) + X(2 + X))
12 + 7X + X2 = (2 + 1X + (2 * X + X * X))
12 + 7X + X2 = (2 + 1X + (2X + X2))

Combine like terms: 1X + 2X = 3X
12 + 7X + X2 = (2 + 3X + X2)

Add '-1X2' to each side of the equation.
12 + 7X + X2 + -1X2 = 2 + 3X + X2 + -1X2

Combine like terms: X2 + -1X2 = 0
12 + 7X + 0 = 2 + 3X + X2 + -1X2
12 + 7X = 2 + 3X + X2 + -1X2

Combine like terms: X2 + -1X2 = 0
12 + 7X = 2 + 3X + 0
12 + 7X = 2 + 3X

Solving
12 + 7X = 2 + 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.
12 + 7X + -3X = 2 + 3X + -3X

Combine like terms: 7X + -3X = 4X
12 + 4X = 2 + 3X + -3X

Combine like terms: 3X + -3X = 0
12 + 4X = 2 + 0
12 + 4X = 2

Add '-12' to each side of the equation.
12 + -12 + 4X = 2 + -12

Combine like terms: 12 + -12 = 0
0 + 4X = 2 + -12
4X = 2 + -12

Combine like terms: 2 + -12 = -10
4X = -10

Divide each side by '4'.
X = -2.5

Simplifying
X = -2.5

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