21y-4=19y+4

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Solution for 21y-4=19y+4 equation:


Simplifying
21y + -4 = 19y + 4

Reorder the terms:
-4 + 21y = 19y + 4

Reorder the terms:
-4 + 21y = 4 + 19y

Solving
-4 + 21y = 4 + 19y

Solving for variable 'y'.

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

Add '-19y' to each side of the equation.
-4 + 21y + -19y = 4 + 19y + -19y

Combine like terms: 21y + -19y = 2y
-4 + 2y = 4 + 19y + -19y

Combine like terms: 19y + -19y = 0
-4 + 2y = 4 + 0
-4 + 2y = 4

Add '4' to each side of the equation.
-4 + 4 + 2y = 4 + 4

Combine like terms: -4 + 4 = 0
0 + 2y = 4 + 4
2y = 4 + 4

Combine like terms: 4 + 4 = 8
2y = 8

Divide each side by '2'.
y = 4

Simplifying
y = 4

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