18.4=-7.2+4y

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Solution for 18.4=-7.2+4y equation:


Simplifying
18.4 = -7.2 + 4y

Solving
18.4 = -7.2 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
18.4 + -4y = -7.2 + 4y + -4y

Combine like terms: 4y + -4y = 0
18.4 + -4y = -7.2 + 0
18.4 + -4y = -7.2

Add '-18.4' to each side of the equation.
18.4 + -18.4 + -4y = -7.2 + -18.4

Combine like terms: 18.4 + -18.4 = 0.0
0.0 + -4y = -7.2 + -18.4
-4y = -7.2 + -18.4

Combine like terms: -7.2 + -18.4 = -25.6
-4y = -25.6

Divide each side by '-4'.
y = 6.4

Simplifying
y = 6.4

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