-7(3x-9)+1=21x+64

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Solution for -7(3x-9)+1=21x+64 equation:


Simplifying
-7(3x + -9) + 1 = 21x + 64

Reorder the terms:
-7(-9 + 3x) + 1 = 21x + 64
(-9 * -7 + 3x * -7) + 1 = 21x + 64
(63 + -21x) + 1 = 21x + 64

Reorder the terms:
63 + 1 + -21x = 21x + 64

Combine like terms: 63 + 1 = 64
64 + -21x = 21x + 64

Reorder the terms:
64 + -21x = 64 + 21x

Add '-64' to each side of the equation.
64 + -64 + -21x = 64 + -64 + 21x

Combine like terms: 64 + -64 = 0
0 + -21x = 64 + -64 + 21x
-21x = 64 + -64 + 21x

Combine like terms: 64 + -64 = 0
-21x = 0 + 21x
-21x = 21x

Solving
-21x = 21x

Solving for variable 'x'.

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

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

Combine like terms: -21x + -21x = -42x
-42x = 21x + -21x

Combine like terms: 21x + -21x = 0
-42x = 0

Divide each side by '-42'.
x = 0

Simplifying
x = 0

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