21=-6(-2x-3)+3(7x+1)

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Solution for 21=-6(-2x-3)+3(7x+1) equation:


Simplifying
21 = -6(-2x + -3) + 3(7x + 1)

Reorder the terms:
21 = -6(-3 + -2x) + 3(7x + 1)
21 = (-3 * -6 + -2x * -6) + 3(7x + 1)
21 = (18 + 12x) + 3(7x + 1)

Reorder the terms:
21 = 18 + 12x + 3(1 + 7x)
21 = 18 + 12x + (1 * 3 + 7x * 3)
21 = 18 + 12x + (3 + 21x)

Reorder the terms:
21 = 18 + 3 + 12x + 21x

Combine like terms: 18 + 3 = 21
21 = 21 + 12x + 21x

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

Add '-21' to each side of the equation.
21 + -21 = 21 + -21 + 33x

Combine like terms: 21 + -21 = 0
0 = 21 + -21 + 33x

Combine like terms: 21 + -21 = 0
0 = 0 + 33x
0 = 33x

Solving
0 = 33x

Solving for variable 'x'.

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

Add '-33x' to each side of the equation.
0 + -33x = 33x + -33x
Remove the zero:
-33x = 33x + -33x

Combine like terms: 33x + -33x = 0
-33x = 0

Divide each side by '-33'.
x = 0

Simplifying
x = 0

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