8x-3(x+7)=4x-9

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Solution for 8x-3(x+7)=4x-9 equation:


Simplifying
8x + -3(x + 7) = 4x + -9

Reorder the terms:
8x + -3(7 + x) = 4x + -9
8x + (7 * -3 + x * -3) = 4x + -9
8x + (-21 + -3x) = 4x + -9

Reorder the terms:
-21 + 8x + -3x = 4x + -9

Combine like terms: 8x + -3x = 5x
-21 + 5x = 4x + -9

Reorder the terms:
-21 + 5x = -9 + 4x

Solving
-21 + 5x = -9 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-21 + 5x + -4x = -9 + 4x + -4x

Combine like terms: 5x + -4x = 1x
-21 + 1x = -9 + 4x + -4x

Combine like terms: 4x + -4x = 0
-21 + 1x = -9 + 0
-21 + 1x = -9

Add '21' to each side of the equation.
-21 + 21 + 1x = -9 + 21

Combine like terms: -21 + 21 = 0
0 + 1x = -9 + 21
1x = -9 + 21

Combine like terms: -9 + 21 = 12
1x = 12

Divide each side by '1'.
x = 12

Simplifying
x = 12

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