6x+8x-21=84-7x

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Solution for 6x+8x-21=84-7x equation:


Simplifying
6x + 8x + -21 = 84 + -7x

Reorder the terms:
-21 + 6x + 8x = 84 + -7x

Combine like terms: 6x + 8x = 14x
-21 + 14x = 84 + -7x

Solving
-21 + 14x = 84 + -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.
-21 + 14x + 7x = 84 + -7x + 7x

Combine like terms: 14x + 7x = 21x
-21 + 21x = 84 + -7x + 7x

Combine like terms: -7x + 7x = 0
-21 + 21x = 84 + 0
-21 + 21x = 84

Add '21' to each side of the equation.
-21 + 21 + 21x = 84 + 21

Combine like terms: -21 + 21 = 0
0 + 21x = 84 + 21
21x = 84 + 21

Combine like terms: 84 + 21 = 105
21x = 105

Divide each side by '21'.
x = 5

Simplifying
x = 5

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