(y+9)2=42

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Solution for (y+9)2=42 equation:


Simplifying
(y + 9) * 2 = 42

Reorder the terms:
(9 + y) * 2 = 42

Reorder the terms for easier multiplication:
2(9 + y) = 42
(9 * 2 + y * 2) = 42
(18 + 2y) = 42

Solving
18 + 2y = 42

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + 2y = 42 + -18

Combine like terms: 18 + -18 = 0
0 + 2y = 42 + -18
2y = 42 + -18

Combine like terms: 42 + -18 = 24
2y = 24

Divide each side by '2'.
y = 12

Simplifying
y = 12

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