-4+y+21=3y+23

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Solution for -4+y+21=3y+23 equation:


Simplifying
-4 + y + 21 = 3y + 23

Reorder the terms:
-4 + 21 + y = 3y + 23

Combine like terms: -4 + 21 = 17
17 + y = 3y + 23

Reorder the terms:
17 + y = 23 + 3y

Solving
17 + y = 23 + 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.
17 + y + -3y = 23 + 3y + -3y

Combine like terms: y + -3y = -2y
17 + -2y = 23 + 3y + -3y

Combine like terms: 3y + -3y = 0
17 + -2y = 23 + 0
17 + -2y = 23

Add '-17' to each side of the equation.
17 + -17 + -2y = 23 + -17

Combine like terms: 17 + -17 = 0
0 + -2y = 23 + -17
-2y = 23 + -17

Combine like terms: 23 + -17 = 6
-2y = 6

Divide each side by '-2'.
y = -3

Simplifying
y = -3

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