2.1=0.3y

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Solution for 2.1=0.3y equation:


Simplifying
2.1 = 0.3y

Solving
2.1 = 0.3y

Solving for variable 'y'.

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

Add '-0.3y' to each side of the equation.
2.1 + -0.3y = 0.3y + -0.3y

Combine like terms: 0.3y + -0.3y = 0.0
2.1 + -0.3y = 0.0

Add '-2.1' to each side of the equation.
2.1 + -2.1 + -0.3y = 0.0 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -0.3y = 0.0 + -2.1
-0.3y = 0.0 + -2.1

Combine like terms: 0.0 + -2.1 = -2.1
-0.3y = -2.1

Divide each side by '-0.3'.
y = 7

Simplifying
y = 7

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