0.4y+9=1

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Solution for 0.4y+9=1 equation: 


Simplifying
0.4y + 9 = 1

Reorder the terms:
9 + 0.4y = 1

Solving
9 + 0.4y = 1

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + 0.4y = 1 + -9

Combine like terms: 9 + -9 = 0
0 + 0.4y = 1 + -9
0.4y = 1 + -9

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

Divide each side by '0.4'.
y = -20

Simplifying
y = -20

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