21x-1=7x+3+80

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Solution for 21x-1=7x+3+80 equation:


Simplifying
21x + -1 = 7x + 3 + 80

Reorder the terms:
-1 + 21x = 7x + 3 + 80

Reorder the terms:
-1 + 21x = 3 + 80 + 7x

Combine like terms: 3 + 80 = 83
-1 + 21x = 83 + 7x

Solving
-1 + 21x = 83 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-1 + 21x + -7x = 83 + 7x + -7x

Combine like terms: 21x + -7x = 14x
-1 + 14x = 83 + 7x + -7x

Combine like terms: 7x + -7x = 0
-1 + 14x = 83 + 0
-1 + 14x = 83

Add '1' to each side of the equation.
-1 + 1 + 14x = 83 + 1

Combine like terms: -1 + 1 = 0
0 + 14x = 83 + 1
14x = 83 + 1

Combine like terms: 83 + 1 = 84
14x = 84

Divide each side by '14'.
x = 6

Simplifying
x = 6

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