3y+1=4y-8

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Solution for 3y+1=4y-8 equation:


Simplifying
3y + 1 = 4y + -8

Reorder the terms:
1 + 3y = 4y + -8

Reorder the terms:
1 + 3y = -8 + 4y

Solving
1 + 3y = -8 + 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.
1 + 3y + -4y = -8 + 4y + -4y

Combine like terms: 3y + -4y = -1y
1 + -1y = -8 + 4y + -4y

Combine like terms: 4y + -4y = 0
1 + -1y = -8 + 0
1 + -1y = -8

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

Combine like terms: 1 + -1 = 0
0 + -1y = -8 + -1
-1y = -8 + -1

Combine like terms: -8 + -1 = -9
-1y = -9

Divide each side by '-1'.
y = 9

Simplifying
y = 9

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