-3y+4=-21

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


Simplifying
-3y + 4 = -21

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

Solving
4 + -3y = -21

Solving for variable 'y'.

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

Add '-4' to each side of the equation.
4 + -4 + -3y = -21 + -4

Combine like terms: 4 + -4 = 0
0 + -3y = -21 + -4
-3y = -21 + -4

Combine like terms: -21 + -4 = -25
-3y = -25

Divide each side by '-3'.
y = 8.333333333

Simplifying
y = 8.333333333

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