9=4(3(5)-4)-7(5)

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Solution for 9=4(3(5)-4)-7(5) equation: 


Simplifying
9 = 4(3(5) + -4) + -7(5)

Multiply 3 * 5
9 = 4(15 + -4) + -7(5)

Combine like terms: 15 + -4 = 11
9 = 4(11) + -7(5)

Multiply 4 * 11
9 = 44 + -7(5)

Multiply -7 * 5
9 = 44 + -35

Combine like terms: 44 + -35 = 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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