8x+21=x+7(4+x)

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Solution for 8x+21=x+7(4+x) equation: 


Simplifying
8x + 21 = x + 7(4 + x)

Reorder the terms:
21 + 8x = x + 7(4 + x)
21 + 8x = x + (4 * 7 + x * 7)
21 + 8x = x + (28 + 7x)

Reorder the terms:
21 + 8x = 28 + x + 7x

Combine like terms: x + 7x = 8x
21 + 8x = 28 + 8x

Add '-8x' to each side of the equation.
21 + 8x + -8x = 28 + 8x + -8x

Combine like terms: 8x + -8x = 0
21 + 0 = 28 + 8x + -8x
21 = 28 + 8x + -8x

Combine like terms: 8x + -8x = 0
21 = 28 + 0
21 = 28

Solving
21 = 28

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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