[y+3]+4=20

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Solution for [y+3]+4=20 equation: 


Simplifying
[y + 3] + 4 = 20

Reorder the terms:
[3 + y] + 4 = 20

Remove brackets around [3 + y]
3 + y + 4 = 20

Reorder the terms:
3 + 4 + y = 20

Combine like terms: 3 + 4 = 7
7 + y = 20

Solving
7 + y = 20

Solving for variable 'y'.

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

Add '-7' to each side of the equation.
7 + -7 + y = 20 + -7

Combine like terms: 7 + -7 = 0
0 + y = 20 + -7
y = 20 + -7

Combine like terms: 20 + -7 = 13
y = 13

Simplifying
y = 13

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