2*1-5*4=

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Solution for 2*1-5*4= equation: 


Simplifying
2 * 1 + -5 * 4 = 0

Multiply 2 * 1
2 + -5 * 4 = 0

Multiply -5 * 4
2 + -20 = 0

Combine like terms: 2 + -20 = -18
-18 = 0

Solving
-18 = 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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