3.8=1.3-0.4y

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Solution for 3.8=1.3-0.4y equation: 


Simplifying
3.8 = 1.3 + -0.4y

Solving
3.8 = 1.3 + -0.4y

Solving for variable 'y'.

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

Add '0.4y' to each side of the equation.
3.8 + 0.4y = 1.3 + -0.4y + 0.4y

Combine like terms: -0.4y + 0.4y = 0.0
3.8 + 0.4y = 1.3 + 0.0
3.8 + 0.4y = 1.3

Add '-3.8' to each side of the equation.
3.8 + -3.8 + 0.4y = 1.3 + -3.8

Combine like terms: 3.8 + -3.8 = 0.0
0.0 + 0.4y = 1.3 + -3.8
0.4y = 1.3 + -3.8

Combine like terms: 1.3 + -3.8 = -2.5
0.4y = -2.5

Divide each side by '0.4'.
y = -6.25

Simplifying
y = -6.25

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