6(4X+3)-9(2X+1)=21

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Solution for 6(4X+3)-9(2X+1)=21 equation: 


Simplifying
6(4X + 3) + -9(2X + 1) = 21

Reorder the terms:
6(3 + 4X) + -9(2X + 1) = 21
(3 * 6 + 4X * 6) + -9(2X + 1) = 21
(18 + 24X) + -9(2X + 1) = 21

Reorder the terms:
18 + 24X + -9(1 + 2X) = 21
18 + 24X + (1 * -9 + 2X * -9) = 21
18 + 24X + (-9 + -18X) = 21

Reorder the terms:
18 + -9 + 24X + -18X = 21

Combine like terms: 18 + -9 = 9
9 + 24X + -18X = 21

Combine like terms: 24X + -18X = 6X
9 + 6X = 21

Solving
9 + 6X = 21

Solving for variable 'X'.

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

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

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

Combine like terms: 21 + -9 = 12
6X = 12

Divide each side by '6'.
X = 2

Simplifying
X = 2

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