8y+5=4y+21

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Solution for 8y+5=4y+21 equation:


Simplifying
8y + 5 = 4y + 21

Reorder the terms:
5 + 8y = 4y + 21

Reorder the terms:
5 + 8y = 21 + 4y

Solving
5 + 8y = 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.
5 + 8y + -4y = 21 + 4y + -4y

Combine like terms: 8y + -4y = 4y
5 + 4y = 21 + 4y + -4y

Combine like terms: 4y + -4y = 0
5 + 4y = 21 + 0
5 + 4y = 21

Add '-5' to each side of the equation.
5 + -5 + 4y = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 4y = 21 + -5
4y = 21 + -5

Combine like terms: 21 + -5 = 16
4y = 16

Divide each side by '4'.
y = 4

Simplifying
y = 4

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