8y-7=y-4

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


Simplifying
8y + -7 = y + -4

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

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

Solving
-7 + 8y = -4 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-7 + 8y + -1y = -4 + y + -1y

Combine like terms: 8y + -1y = 7y
-7 + 7y = -4 + y + -1y

Combine like terms: y + -1y = 0
-7 + 7y = -4 + 0
-7 + 7y = -4

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

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

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

Divide each side by '7'.
y = 0.4285714286

Simplifying
y = 0.4285714286

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