4.5=2.1-0.5y

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Solution for 4.5=2.1-0.5y equation: 


Simplifying
4.5 = 2.1 + -0.5y

Solving
4.5 = 2.1 + -0.5y

Solving for variable 'y'.

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

Add '0.5y' to each side of the equation.
4.5 + 0.5y = 2.1 + -0.5y + 0.5y

Combine like terms: -0.5y + 0.5y = 0.0
4.5 + 0.5y = 2.1 + 0.0
4.5 + 0.5y = 2.1

Add '-4.5' to each side of the equation.
4.5 + -4.5 + 0.5y = 2.1 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
0.0 + 0.5y = 2.1 + -4.5
0.5y = 2.1 + -4.5

Combine like terms: 2.1 + -4.5 = -2.4
0.5y = -2.4

Divide each side by '0.5'.
y = -4.8

Simplifying
y = -4.8

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