3(10)-9=2(10)+1

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Solution for 3(10)-9=2(10)+1 equation: 


Simplifying
3(10) + -9 = 2(10) + 1

Multiply 3 * 10
30 + -9 = 2(10) + 1

Combine like terms: 30 + -9 = 21
21 = 2(10) + 1

Multiply 2 * 10
21 = 20 + 1

Combine like terms: 20 + 1 = 21
21 = 21

Add '-21' to each side of the equation.
21 + -21 = 21 + -21

Combine like terms: 21 + -21 = 0
0 = 21 + -21

Combine like terms: 21 + -21 = 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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