8y+3y-21=3y+6-4

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Solution for 8y+3y-21=3y+6-4 equation:


Simplifying
8y + 3y + -21 = 3y + 6 + -4

Reorder the terms:
-21 + 8y + 3y = 3y + 6 + -4

Combine like terms: 8y + 3y = 11y
-21 + 11y = 3y + 6 + -4

Reorder the terms:
-21 + 11y = 6 + -4 + 3y

Combine like terms: 6 + -4 = 2
-21 + 11y = 2 + 3y

Solving
-21 + 11y = 2 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
-21 + 11y + -3y = 2 + 3y + -3y

Combine like terms: 11y + -3y = 8y
-21 + 8y = 2 + 3y + -3y

Combine like terms: 3y + -3y = 0
-21 + 8y = 2 + 0
-21 + 8y = 2

Add '21' to each side of the equation.
-21 + 21 + 8y = 2 + 21

Combine like terms: -21 + 21 = 0
0 + 8y = 2 + 21
8y = 2 + 21

Combine like terms: 2 + 21 = 23
8y = 23

Divide each side by '8'.
y = 2.875

Simplifying
y = 2.875

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