400(X-7)=1200

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Solution for 400(X-7)=1200 equation:


Simplifying
400(X + -7) = 1200

Reorder the terms:
400(-7 + X) = 1200
(-7 * 400 + X * 400) = 1200
(-2800 + 400X) = 1200

Solving
-2800 + 400X = 1200

Solving for variable 'X'.

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

Add '2800' to each side of the equation.
-2800 + 2800 + 400X = 1200 + 2800

Combine like terms: -2800 + 2800 = 0
0 + 400X = 1200 + 2800
400X = 1200 + 2800

Combine like terms: 1200 + 2800 = 4000
400X = 4000

Divide each side by '400'.
X = 10

Simplifying
X = 10

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