-25=-(7+X)

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Solution for -25=-(7+X) equation:


Simplifying
-25 = -1(7 + X)
-25 = (7 * -1 + X * -1)
-25 = (-7 + -1X)

Solving
-25 = -7 + -1X

Solving for variable 'X'.

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

Add 'X' to each side of the equation.
-25 + X = -7 + -1X + X

Combine like terms: -1X + X = 0
-25 + X = -7 + 0
-25 + X = -7

Add '25' to each side of the equation.
-25 + 25 + X = -7 + 25

Combine like terms: -25 + 25 = 0
0 + X = -7 + 25
X = -7 + 25

Combine like terms: -7 + 25 = 18
X = 18

Simplifying
X = 18

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