16x-3(4x+7)=6x+(2x+21)

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Solution for 16x-3(4x+7)=6x+(2x+21) equation:


Simplifying
16x + -3(4x + 7) = 6x + (2x + 21)

Reorder the terms:
16x + -3(7 + 4x) = 6x + (2x + 21)
16x + (7 * -3 + 4x * -3) = 6x + (2x + 21)
16x + (-21 + -12x) = 6x + (2x + 21)

Reorder the terms:
-21 + 16x + -12x = 6x + (2x + 21)

Combine like terms: 16x + -12x = 4x
-21 + 4x = 6x + (2x + 21)

Reorder the terms:
-21 + 4x = 6x + (21 + 2x)

Remove parenthesis around (21 + 2x)
-21 + 4x = 6x + 21 + 2x

Reorder the terms:
-21 + 4x = 21 + 6x + 2x

Combine like terms: 6x + 2x = 8x
-21 + 4x = 21 + 8x

Solving
-21 + 4x = 21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-21 + 4x + -8x = 21 + 8x + -8x

Combine like terms: 4x + -8x = -4x
-21 + -4x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
-21 + -4x = 21 + 0
-21 + -4x = 21

Add '21' to each side of the equation.
-21 + 21 + -4x = 21 + 21

Combine like terms: -21 + 21 = 0
0 + -4x = 21 + 21
-4x = 21 + 21

Combine like terms: 21 + 21 = 42
-4x = 42

Divide each side by '-4'.
x = -10.5

Simplifying
x = -10.5

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