3x+(x-15)=145

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Solution for 3x+(x-15)=145 equation:


Simplifying
3x + (x + -15) = 145

Reorder the terms:
3x + (-15 + x) = 145

Remove parenthesis around (-15 + x)
3x + -15 + x = 145

Reorder the terms:
-15 + 3x + x = 145

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

Solving
-15 + 4x = 145

Solving for variable 'x'.

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

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

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

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

Divide each side by '4'.
x = 40

Simplifying
x = 40

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