-3y+7.4=20.9

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Solution for -3y+7.4=20.9 equation: 


Simplifying
-3y + 7.4 = 20.9

Reorder the terms:
7.4 + -3y = 20.9

Solving
7.4 + -3y = 20.9

Solving for variable 'y'.

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

Add '-7.4' to each side of the equation.
7.4 + -7.4 + -3y = 20.9 + -7.4

Combine like terms: 7.4 + -7.4 = 0.0
0.0 + -3y = 20.9 + -7.4
-3y = 20.9 + -7.4

Combine like terms: 20.9 + -7.4 = 13.5
-3y = 13.5

Divide each side by '-3'.
y = -4.5

Simplifying
y = -4.5

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