3(y-23)+3(y-2)=21

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Solution for 3(y-23)+3(y-2)=21 equation: 


Simplifying
3(y + -23) + 3(y + -2) = 21

Reorder the terms:
3(-23 + y) + 3(y + -2) = 21
(-23 * 3 + y * 3) + 3(y + -2) = 21
(-69 + 3y) + 3(y + -2) = 21

Reorder the terms:
-69 + 3y + 3(-2 + y) = 21
-69 + 3y + (-2 * 3 + y * 3) = 21
-69 + 3y + (-6 + 3y) = 21

Reorder the terms:
-69 + -6 + 3y + 3y = 21

Combine like terms: -69 + -6 = -75
-75 + 3y + 3y = 21

Combine like terms: 3y + 3y = 6y
-75 + 6y = 21

Solving
-75 + 6y = 21

Solving for variable 'y'.

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

Add '75' to each side of the equation.
-75 + 75 + 6y = 21 + 75

Combine like terms: -75 + 75 = 0
0 + 6y = 21 + 75
6y = 21 + 75

Combine like terms: 21 + 75 = 96
6y = 96

Divide each side by '6'.
y = 16

Simplifying
y = 16

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