145=x+2x+(x-15)

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Solution for 145=x+2x+(x-15) equation:


Simplifying
145 = x + 2x + (x + -15)

Reorder the terms:
145 = x + 2x + (-15 + x)

Remove parenthesis around (-15 + x)
145 = x + 2x + -15 + x

Reorder the terms:
145 = -15 + x + 2x + x

Combine like terms: x + 2x = 3x
145 = -15 + 3x + x

Combine like terms: 3x + x = 4x
145 = -15 + 4x

Solving
145 = -15 + 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.
145 + -4x = -15 + 4x + -4x

Combine like terms: 4x + -4x = 0
145 + -4x = -15 + 0
145 + -4x = -15

Add '-145' to each side of the equation.
145 + -145 + -4x = -15 + -145

Combine like terms: 145 + -145 = 0
0 + -4x = -15 + -145
-4x = -15 + -145

Combine like terms: -15 + -145 = -160
-4x = -160

Divide each side by '-4'.
x = 40

Simplifying
x = 40

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