12=-5(4x+1)+21x

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Solution for 12=-5(4x+1)+21x equation:


Simplifying
12 = -5(4x + 1) + 21x

Reorder the terms:
12 = -5(1 + 4x) + 21x
12 = (1 * -5 + 4x * -5) + 21x
12 = (-5 + -20x) + 21x

Combine like terms: -20x + 21x = 1x
12 = -5 + 1x

Solving
12 = -5 + 1x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
12 + -1x = -5 + 1x + -1x

Combine like terms: 1x + -1x = 0
12 + -1x = -5 + 0
12 + -1x = -5

Add '-12' to each side of the equation.
12 + -12 + -1x = -5 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = -5 + -12
-1x = -5 + -12

Combine like terms: -5 + -12 = -17
-1x = -17

Divide each side by '-1'.
x = 17

Simplifying
x = 17

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