8y-9=4y+7

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Solution for 8y-9=4y+7 equation:


Simplifying
8y + -9 = 4y + 7

Reorder the terms:
-9 + 8y = 4y + 7

Reorder the terms:
-9 + 8y = 7 + 4y

Solving
-9 + 8y = 7 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-9 + 8y + -4y = 7 + 4y + -4y

Combine like terms: 8y + -4y = 4y
-9 + 4y = 7 + 4y + -4y

Combine like terms: 4y + -4y = 0
-9 + 4y = 7 + 0
-9 + 4y = 7

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

Combine like terms: -9 + 9 = 0
0 + 4y = 7 + 9
4y = 7 + 9

Combine like terms: 7 + 9 = 16
4y = 16

Divide each side by '4'.
y = 4

Simplifying
y = 4

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