4+y=12+7

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Solution for 4+y=12+7 equation: 


Simplifying
4 + y = 12 + 7

Combine like terms: 12 + 7 = 19
4 + y = 19

Solving
4 + y = 19

Solving for variable 'y'.

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

Add '-4' to each side of the equation.
4 + -4 + y = 19 + -4

Combine like terms: 4 + -4 = 0
0 + y = 19 + -4
y = 19 + -4

Combine like terms: 19 + -4 = 15
y = 15

Simplifying
y = 15

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