8.9=2.1-1.3y

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Solution for 8.9=2.1-1.3y equation:


Simplifying
8.9 = 2.1 + -1.3y

Solving
8.9 = 2.1 + -1.3y

Solving for variable 'y'.

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

Add '1.3y' to each side of the equation.
8.9 + 1.3y = 2.1 + -1.3y + 1.3y

Combine like terms: -1.3y + 1.3y = 0.0
8.9 + 1.3y = 2.1 + 0.0
8.9 + 1.3y = 2.1

Add '-8.9' to each side of the equation.
8.9 + -8.9 + 1.3y = 2.1 + -8.9

Combine like terms: 8.9 + -8.9 = 0.0
0.0 + 1.3y = 2.1 + -8.9
1.3y = 2.1 + -8.9

Combine like terms: 2.1 + -8.9 = -6.8
1.3y = -6.8

Divide each side by '1.3'.
y = -5.230769231

Simplifying
y = -5.230769231

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