3(7+3)-(2(7)+7)=9

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Solution for 3(7+3)-(2(7)+7)=9 equation: 


Simplifying
3(7 + 3) + -1(2(7) + 7) = 9

Combine like terms: 7 + 3 = 10
3(10) + -1(2(7) + 7) = 9

Multiply 3 * 10
30 + -1(2(7) + 7) = 9

Multiply 2 * 7
30 + -1(14 + 7) = 9

Combine like terms: 14 + 7 = 21
30 + -1(21) = 9

Multiply -1 * 21
30 + -21 = 9

Combine like terms: 30 + -21 = 9
9 = 9

Add '-9' to each side of the equation.
9 + -9 = 9 + -9

Combine like terms: 9 + -9 = 0
0 = 9 + -9

Combine like terms: 9 + -9 = 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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