(21x-5)-12=56(25+7x)

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Solution for (21x-5)-12=56(25+7x) equation:


Simplifying
(21x + -5) + -12 = 56(25 + 7x)

Reorder the terms:
(-5 + 21x) + -12 = 56(25 + 7x)

Remove parenthesis around (-5 + 21x)
-5 + 21x + -12 = 56(25 + 7x)

Reorder the terms:
-5 + -12 + 21x = 56(25 + 7x)

Combine like terms: -5 + -12 = -17
-17 + 21x = 56(25 + 7x)
-17 + 21x = (25 * 56 + 7x * 56)
-17 + 21x = (1400 + 392x)

Solving
-17 + 21x = 1400 + 392x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-392x' to each side of the equation.
-17 + 21x + -392x = 1400 + 392x + -392x

Combine like terms: 21x + -392x = -371x
-17 + -371x = 1400 + 392x + -392x

Combine like terms: 392x + -392x = 0
-17 + -371x = 1400 + 0
-17 + -371x = 1400

Add '17' to each side of the equation.
-17 + 17 + -371x = 1400 + 17

Combine like terms: -17 + 17 = 0
0 + -371x = 1400 + 17
-371x = 1400 + 17

Combine like terms: 1400 + 17 = 1417
-371x = 1417

Divide each side by '-371'.
x = -3.819407008

Simplifying
x = -3.819407008

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