7y-(y-4)=25

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Solution for 7y-(y-4)=25 equation:


Simplifying
7y + -1(y + -4) = 25

Reorder the terms:
7y + -1(-4 + y) = 25
7y + (-4 * -1 + y * -1) = 25
7y + (4 + -1y) = 25

Reorder the terms:
4 + 7y + -1y = 25

Combine like terms: 7y + -1y = 6y
4 + 6y = 25

Solving
4 + 6y = 25

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 + 6y = 25 + -4

Combine like terms: 4 + -4 = 0
0 + 6y = 25 + -4
6y = 25 + -4

Combine like terms: 25 + -4 = 21
6y = 21

Divide each side by '6'.
y = 3.5

Simplifying
y = 3.5

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