.4y+8=-1

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


Simplifying
0.4y + 8 = -1

Reorder the terms:
8 + 0.4y = -1

Solving
8 + 0.4y = -1

Solving for variable 'y'.

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

Add '-8' to each side of the equation.
8 + -8 + 0.4y = -1 + -8

Combine like terms: 8 + -8 = 0
0 + 0.4y = -1 + -8
0.4y = -1 + -8

Combine like terms: -1 + -8 = -9
0.4y = -9

Divide each side by '0.4'.
y = -22.5

Simplifying
y = -22.5

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