3x+4(2x-14)=21

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Solution for 3x+4(2x-14)=21 equation:


Simplifying
3x + 4(2x + -14) = 21

Reorder the terms:
3x + 4(-14 + 2x) = 21
3x + (-14 * 4 + 2x * 4) = 21
3x + (-56 + 8x) = 21

Reorder the terms:
-56 + 3x + 8x = 21

Combine like terms: 3x + 8x = 11x
-56 + 11x = 21

Solving
-56 + 11x = 21

Solving for variable 'x'.

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

Add '56' to each side of the equation.
-56 + 56 + 11x = 21 + 56

Combine like terms: -56 + 56 = 0
0 + 11x = 21 + 56
11x = 21 + 56

Combine like terms: 21 + 56 = 77
11x = 77

Divide each side by '11'.
x = 7

Simplifying
x = 7

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