4-(4(4)-7)=5(4)-(4+21)

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Solution for 4-(4(4)-7)=5(4)-(4+21) equation: 


Simplifying
4 + -1(4(4) + -7) = 5(4) + -1(4 + 21)

Multiply 4 * 4
4 + -1(16 + -7) = 5(4) + -1(4 + 21)

Combine like terms: 16 + -7 = 9
4 + -1(9) = 5(4) + -1(4 + 21)

Multiply -1 * 9
4 + -9 = 5(4) + -1(4 + 21)

Combine like terms: 4 + -9 = -5
-5 = 5(4) + -1(4 + 21)

Multiply 5 * 4
-5 = 20 + -1(4 + 21)

Combine like terms: 4 + 21 = 25
-5 = 20 + -1(25)

Multiply -1 * 25
-5 = 20 + -25

Combine like terms: 20 + -25 = -5
-5 = -5

Add '5' to each side of the equation.
-5 + 5 = -5 + 5

Combine like terms: -5 + 5 = 0
0 = -5 + 5

Combine like terms: -5 + 5 = 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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