3y-7=4y+8

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Solution for 3y-7=4y+8 equation:


Simplifying
3y + -7 = 4y + 8

Reorder the terms:
-7 + 3y = 4y + 8

Reorder the terms:
-7 + 3y = 8 + 4y

Solving
-7 + 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.
-7 + 3y + -4y = 8 + 4y + -4y

Combine like terms: 3y + -4y = -1y
-7 + -1y = 8 + 4y + -4y

Combine like terms: 4y + -4y = 0
-7 + -1y = 8 + 0
-7 + -1y = 8

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

Combine like terms: -7 + 7 = 0
0 + -1y = 8 + 7
-1y = 8 + 7

Combine like terms: 8 + 7 = 15
-1y = 15

Divide each side by '-1'.
y = -15

Simplifying
y = -15

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