27.8=4(21.2)+y

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Solution for 27.8=4(21.2)+y equation: 


Simplifying
27.8 = 4(21.2) + y

Multiply 4 * 21.2
27.8 = 84.8 + y

Solving
27.8 = 84.8 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
27.8 + -1y = 84.8 + y + -1y

Combine like terms: y + -1y = 0
27.8 + -1y = 84.8 + 0
27.8 + -1y = 84.8

Add '-27.8' to each side of the equation.
27.8 + -27.8 + -1y = 84.8 + -27.8

Combine like terms: 27.8 + -27.8 = 0.0
0.0 + -1y = 84.8 + -27.8
-1y = 84.8 + -27.8

Combine like terms: 84.8 + -27.8 = 57
-1y = 57

Divide each side by '-1'.
y = -57

Simplifying
y = -57

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