8x-(4X+7)=21

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Solution for 8x-(4X+7)=21 equation:


Simplifying
8x + -1(4X + 7) = 21

Reorder the terms:
8x + -1(7 + 4X) = 21
8x + (7 * -1 + 4X * -1) = 21
8x + (-7 + -4X) = 21

Reorder the terms:
-7 + -4X + 8x = 21

Solving
-7 + -4X + 8x = 21

Solving for variable 'X'.

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

Add '7' to each side of the equation.
-7 + -4X + 7 + 8x = 21 + 7

Reorder the terms:
-7 + 7 + -4X + 8x = 21 + 7

Combine like terms: -7 + 7 = 0
0 + -4X + 8x = 21 + 7
-4X + 8x = 21 + 7

Combine like terms: 21 + 7 = 28
-4X + 8x = 28

Add '-8x' to each side of the equation.
-4X + 8x + -8x = 28 + -8x

Combine like terms: 8x + -8x = 0
-4X + 0 = 28 + -8x
-4X = 28 + -8x

Divide each side by '-4'.
X = -7 + 2x

Simplifying
X = -7 + 2x

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