3(5)+6(5)-9=5(5)-2(5)+21

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Solution for 3(5)+6(5)-9=5(5)-2(5)+21 equation: 


Simplifying
3(5) + 6(5) + -9 = 5(5) + -2(5) + 21

Multiply 3 * 5
15 + 6(5) + -9 = 5(5) + -2(5) + 21

Multiply 6 * 5
15 + 30 + -9 = 5(5) + -2(5) + 21

Combine like terms: 15 + 30 = 45
45 + -9 = 5(5) + -2(5) + 21

Combine like terms: 45 + -9 = 36
36 = 5(5) + -2(5) + 21

Multiply 5 * 5
36 = 25 + -2(5) + 21

Multiply -2 * 5
36 = 25 + -10 + 21

Combine like terms: 25 + -10 = 15
36 = 15 + 21

Combine like terms: 15 + 21 = 36
36 = 36

Add '-36' to each side of the equation.
36 + -36 = 36 + -36

Combine like terms: 36 + -36 = 0
0 = 36 + -36

Combine like terms: 36 + -36 = 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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