7y+9=3y+4

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Solution for 7y+9=3y+4 equation:


Simplifying
7y + 9 = 3y + 4

Reorder the terms:
9 + 7y = 3y + 4

Reorder the terms:
9 + 7y = 4 + 3y

Solving
9 + 7y = 4 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
9 + 7y + -3y = 4 + 3y + -3y

Combine like terms: 7y + -3y = 4y
9 + 4y = 4 + 3y + -3y

Combine like terms: 3y + -3y = 0
9 + 4y = 4 + 0
9 + 4y = 4

Add '-9' to each side of the equation.
9 + -9 + 4y = 4 + -9

Combine like terms: 9 + -9 = 0
0 + 4y = 4 + -9
4y = 4 + -9

Combine like terms: 4 + -9 = -5
4y = -5

Divide each side by '4'.
y = -1.25

Simplifying
y = -1.25

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