0.4y+12=-1

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Solution for 0.4y+12=-1 equation: 


Simplifying
0.4y + 12 = -1

Reorder the terms:
12 + 0.4y = -1

Solving
12 + 0.4y = -1

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + 0.4y = -1 + -12

Combine like terms: 12 + -12 = 0
0 + 0.4y = -1 + -12
0.4y = -1 + -12

Combine like terms: -1 + -12 = -13
0.4y = -13

Divide each side by '0.4'.
y = -32.5

Simplifying
y = -32.5

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