-5x-(4x-6)=21

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Solution for -5x-(4x-6)=21 equation:


Simplifying
-5x + -1(4x + -6) = 21

Reorder the terms:
-5x + -1(-6 + 4x) = 21
-5x + (-6 * -1 + 4x * -1) = 21
-5x + (6 + -4x) = 21

Reorder the terms:
6 + -5x + -4x = 21

Combine like terms: -5x + -4x = -9x
6 + -9x = 21

Solving
6 + -9x = 21

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + -9x = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -9x = 21 + -6
-9x = 21 + -6

Combine like terms: 21 + -6 = 15
-9x = 15

Divide each side by '-9'.
x = -1.666666667

Simplifying
x = -1.666666667

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