0.8y+21=-1

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Solution for 0.8y+21=-1 equation: 


Simplifying
0.8y + 21 = -1

Reorder the terms:
21 + 0.8y = -1

Solving
21 + 0.8y = -1

Solving for variable 'y'.

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

Add '-21' to each side of the equation.
21 + -21 + 0.8y = -1 + -21

Combine like terms: 21 + -21 = 0
0 + 0.8y = -1 + -21
0.8y = -1 + -21

Combine like terms: -1 + -21 = -22
0.8y = -22

Divide each side by '0.8'.
y = -27.5

Simplifying
y = -27.5

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