42+5*-21=3*-21

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Solution for 42+5*-21=3*-21 equation: 


Simplifying
42 + 5 * -21 = 3 * -21

Multiply 5 * -21
42 + -105 = 3 * -21

Combine like terms: 42 + -105 = -63
-63 = 3 * -21

Multiply 3 * -21
-63 = -63

Add '63' to each side of the equation.
-63 + 63 = -63 + 63

Combine like terms: -63 + 63 = 0
0 = -63 + 63

Combine like terms: -63 + 63 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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