(x-3)-(3x-4)=15

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Solution for (x-3)-(3x-4)=15 equation:


Simplifying
(x + -3) + -1(3x + -4) = 15

Reorder the terms:
(-3 + x) + -1(3x + -4) = 15

Remove parenthesis around (-3 + x)
-3 + x + -1(3x + -4) = 15

Reorder the terms:
-3 + x + -1(-4 + 3x) = 15
-3 + x + (-4 * -1 + 3x * -1) = 15
-3 + x + (4 + -3x) = 15

Reorder the terms:
-3 + 4 + x + -3x = 15

Combine like terms: -3 + 4 = 1
1 + x + -3x = 15

Combine like terms: x + -3x = -2x
1 + -2x = 15

Solving
1 + -2x = 15

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + -2x = 15 + -1

Combine like terms: 1 + -1 = 0
0 + -2x = 15 + -1
-2x = 15 + -1

Combine like terms: 15 + -1 = 14
-2x = 14

Divide each side by '-2'.
x = -7

Simplifying
x = -7

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