16y-15=4y+21

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Solution for 16y-15=4y+21 equation:


Simplifying
16y + -15 = 4y + 21

Reorder the terms:
-15 + 16y = 4y + 21

Reorder the terms:
-15 + 16y = 21 + 4y

Solving
-15 + 16y = 21 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-15 + 16y + -4y = 21 + 4y + -4y

Combine like terms: 16y + -4y = 12y
-15 + 12y = 21 + 4y + -4y

Combine like terms: 4y + -4y = 0
-15 + 12y = 21 + 0
-15 + 12y = 21

Add '15' to each side of the equation.
-15 + 15 + 12y = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 12y = 21 + 15
12y = 21 + 15

Combine like terms: 21 + 15 = 36
12y = 36

Divide each side by '12'.
y = 3

Simplifying
y = 3

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