3x+4(2x-3)=21

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


Simplifying
3x + 4(2x + -3) = 21

Reorder the terms:
3x + 4(-3 + 2x) = 21
3x + (-3 * 4 + 2x * 4) = 21
3x + (-12 + 8x) = 21

Reorder the terms:
-12 + 3x + 8x = 21

Combine like terms: 3x + 8x = 11x
-12 + 11x = 21

Solving
-12 + 11x = 21

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 11x = 21 + 12

Combine like terms: -12 + 12 = 0
0 + 11x = 21 + 12
11x = 21 + 12

Combine like terms: 21 + 12 = 33
11x = 33

Divide each side by '11'.
x = 3

Simplifying
x = 3

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