42=49-7

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Solution for 42=49-7 equation: 


Simplifying
42 = 49 + -7

Combine like terms: 49 + -7 = 42
42 = 42

Add '-42' to each side of the equation.
42 + -42 = 42 + -42

Combine like terms: 42 + -42 = 0
0 = 42 + -42

Combine like terms: 42 + -42 = 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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