7x+21x-5=7(4x+7)

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Solution for 7x+21x-5=7(4x+7) equation:


Simplifying
7x + 21x + -5 = 7(4x + 7)

Reorder the terms:
-5 + 7x + 21x = 7(4x + 7)

Combine like terms: 7x + 21x = 28x
-5 + 28x = 7(4x + 7)

Reorder the terms:
-5 + 28x = 7(7 + 4x)
-5 + 28x = (7 * 7 + 4x * 7)
-5 + 28x = (49 + 28x)

Add '-28x' to each side of the equation.
-5 + 28x + -28x = 49 + 28x + -28x

Combine like terms: 28x + -28x = 0
-5 + 0 = 49 + 28x + -28x
-5 = 49 + 28x + -28x

Combine like terms: 28x + -28x = 0
-5 = 49 + 0
-5 = 49

Solving
-5 = 49

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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