7-3=30-y

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Solution for 7-3=30-y equation:


Simplifying
7 + -3 = 30 + -1y

Combine like terms: 7 + -3 = 4
4 = 30 + -1y

Solving
4 = 30 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
4 + y = 30 + -1y + y

Combine like terms: -1y + y = 0
4 + y = 30 + 0
4 + y = 30

Add '-4' to each side of the equation.
4 + -4 + y = 30 + -4

Combine like terms: 4 + -4 = 0
0 + y = 30 + -4
y = 30 + -4

Combine like terms: 30 + -4 = 26
y = 26

Simplifying
y = 26

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