15[5-(4-x)]+5x=4(5x+4)-1

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Solution for 15[5-(4-x)]+5x=4(5x+4)-1 equation: 


Simplifying
15[5 + -1(4 + -1x)] + 5x = 4(5x + 4) + -1
15[5 + (4 * -1 + -1x * -1)] + 5x = 4(5x + 4) + -1
15[5 + (-4 + 1x)] + 5x = 4(5x + 4) + -1

Combine like terms: 5 + -4 = 1
15[1 + 1x] + 5x = 4(5x + 4) + -1
[1 * 15 + 1x * 15] + 5x = 4(5x + 4) + -1
[15 + 15x] + 5x = 4(5x + 4) + -1

Combine like terms: 15x + 5x = 20x
15 + 20x = 4(5x + 4) + -1

Reorder the terms:
15 + 20x = 4(4 + 5x) + -1
15 + 20x = (4 * 4 + 5x * 4) + -1
15 + 20x = (16 + 20x) + -1

Reorder the terms:
15 + 20x = 16 + -1 + 20x

Combine like terms: 16 + -1 = 15
15 + 20x = 15 + 20x

Add '-15' to each side of the equation.
15 + -15 + 20x = 15 + -15 + 20x

Combine like terms: 15 + -15 = 0
0 + 20x = 15 + -15 + 20x
20x = 15 + -15 + 20x

Combine like terms: 15 + -15 = 0
20x = 0 + 20x
20x = 20x

Add '-20x' to each side of the equation.
20x + -20x = 20x + -20x

Combine like terms: 20x + -20x = 0
0 = 20x + -20x

Combine like terms: 20x + -20x = 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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