3(y+3)-1=20

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Solution for 3(y+3)-1=20 equation: 


Simplifying
3(y + 3) + -1 = 20

Reorder the terms:
3(3 + y) + -1 = 20
(3 * 3 + y * 3) + -1 = 20
(9 + 3y) + -1 = 20

Reorder the terms:
9 + -1 + 3y = 20

Combine like terms: 9 + -1 = 8
8 + 3y = 20

Solving
8 + 3y = 20

Solving for variable 'y'.

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

Add '-8' to each side of the equation.
8 + -8 + 3y = 20 + -8

Combine like terms: 8 + -8 = 0
0 + 3y = 20 + -8
3y = 20 + -8

Combine like terms: 20 + -8 = 12
3y = 12

Divide each side by '3'.
y = 4

Simplifying
y = 4

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