-(4y-21)+4=25

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Solution for -(4y-21)+4=25 equation: 


Simplifying
-1(4y + -21) + 4 = 25

Reorder the terms:
-1(-21 + 4y) + 4 = 25
(-21 * -1 + 4y * -1) + 4 = 25
(21 + -4y) + 4 = 25

Reorder the terms:
21 + 4 + -4y = 25

Combine like terms: 21 + 4 = 25
25 + -4y = 25

Add '-25' to each side of the equation.
25 + -25 + -4y = 25 + -25

Combine like terms: 25 + -25 = 0
0 + -4y = 25 + -25
-4y = 25 + -25

Combine like terms: 25 + -25 = 0
-4y = 0

Solving
-4y = 0

Solving for variable 'y'.

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

Divide each side by '-4'.
y = 0

Simplifying
y = 0

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