21-5*4+8=

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Solution for 21-5*4+8= equation: 


Simplifying
21 + -5 * 4 + 8 = 0

Multiply -5 * 4
21 + -20 + 8 = 0

Combine like terms: 21 + -20 = 1
1 + 8 = 0

Combine like terms: 1 + 8 = 9
9 = 0

Solving
9 = 0

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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