15+X=4*(60+X)

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Solution for 15+X=4*(60+X) equation: 


Simplifying
15 + X = 4(60 + X)
15 + X = (60 * 4 + X * 4)
15 + X = (240 + 4X)

Solving
15 + X = 240 + 4X

Solving for variable 'X'.

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

Add '-4X' to each side of the equation.
15 + X + -4X = 240 + 4X + -4X

Combine like terms: X + -4X = -3X
15 + -3X = 240 + 4X + -4X

Combine like terms: 4X + -4X = 0
15 + -3X = 240 + 0
15 + -3X = 240

Add '-15' to each side of the equation.
15 + -15 + -3X = 240 + -15

Combine like terms: 15 + -15 = 0
0 + -3X = 240 + -15
-3X = 240 + -15

Combine like terms: 240 + -15 = 225
-3X = 225

Divide each side by '-3'.
X = -75

Simplifying
X = -75

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