2.1=y-3.4

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Solution for 2.1=y-3.4 equation: 


Simplifying
2.1 = y + -3.4

Reorder the terms:
2.1 = -3.4 + y

Solving
2.1 = -3.4 + 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.
2.1 + -1y = -3.4 + y + -1y

Combine like terms: y + -1y = 0
2.1 + -1y = -3.4 + 0
2.1 + -1y = -3.4

Add '-2.1' to each side of the equation.
2.1 + -2.1 + -1y = -3.4 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -1y = -3.4 + -2.1
-1y = -3.4 + -2.1

Combine like terms: -3.4 + -2.1 = -5.5
-1y = -5.5

Divide each side by '-1'.
y = 5.5

Simplifying
y = 5.5

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