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

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Solution for 2(x-4)-(6-5x)=21 equation:


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

Reorder the terms:
2(-4 + x) + -1(6 + -5x) = 21
(-4 * 2 + x * 2) + -1(6 + -5x) = 21
(-8 + 2x) + -1(6 + -5x) = 21
-8 + 2x + (6 * -1 + -5x * -1) = 21
-8 + 2x + (-6 + 5x) = 21

Reorder the terms:
-8 + -6 + 2x + 5x = 21

Combine like terms: -8 + -6 = -14
-14 + 2x + 5x = 21

Combine like terms: 2x + 5x = 7x
-14 + 7x = 21

Solving
-14 + 7x = 21

Solving for variable 'x'.

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

Add '14' to each side of the equation.
-14 + 14 + 7x = 21 + 14

Combine like terms: -14 + 14 = 0
0 + 7x = 21 + 14
7x = 21 + 14

Combine like terms: 21 + 14 = 35
7x = 35

Divide each side by '7'.
x = 5

Simplifying
x = 5

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