18-X=7+5(X+7)

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Solution for 18-X=7+5(X+7) equation:


Simplifying
18 + -1X = 7 + 5(X + 7)

Reorder the terms:
18 + -1X = 7 + 5(7 + X)
18 + -1X = 7 + (7 * 5 + X * 5)
18 + -1X = 7 + (35 + 5X)

Combine like terms: 7 + 35 = 42
18 + -1X = 42 + 5X

Solving
18 + -1X = 42 + 5X

Solving for variable 'X'.

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

Add '-5X' to each side of the equation.
18 + -1X + -5X = 42 + 5X + -5X

Combine like terms: -1X + -5X = -6X
18 + -6X = 42 + 5X + -5X

Combine like terms: 5X + -5X = 0
18 + -6X = 42 + 0
18 + -6X = 42

Add '-18' to each side of the equation.
18 + -18 + -6X = 42 + -18

Combine like terms: 18 + -18 = 0
0 + -6X = 42 + -18
-6X = 42 + -18

Combine like terms: 42 + -18 = 24
-6X = 24

Divide each side by '-6'.
X = -4

Simplifying
X = -4

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