9-.8(y-3)=1

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Solution for 9-.8(y-3)=1 equation: 


Simplifying
9 + -0.8(y + -3) = 1

Reorder the terms:
9 + -0.8(-3 + y) = 1
9 + (-3 * -0.8 + y * -0.8) = 1
9 + (2.4 + -0.8y) = 1

Combine like terms: 9 + 2.4 = 11.4
11.4 + -0.8y = 1

Solving
11.4 + -0.8y = 1

Solving for variable 'y'.

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

Add '-11.4' to each side of the equation.
11.4 + -11.4 + -0.8y = 1 + -11.4

Combine like terms: 11.4 + -11.4 = 0.0
0.0 + -0.8y = 1 + -11.4
-0.8y = 1 + -11.4

Combine like terms: 1 + -11.4 = -10.4
-0.8y = -10.4

Divide each side by '-0.8'.
y = 13

Simplifying
y = 13

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