y-1=3x+8.4

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Solution for y-1=3x+8.4 equation: 


Simplifying
y + -1 = 3x + 8.4

Reorder the terms:
-1 + y = 3x + 8.4

Reorder the terms:
-1 + y = 8.4 + 3x

Solving
-1 + y = 8.4 + 3x

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + y = 8.4 + 1 + 3x

Combine like terms: -1 + 1 = 0
0 + y = 8.4 + 1 + 3x
y = 8.4 + 1 + 3x

Combine like terms: 8.4 + 1 = 9.4
y = 9.4 + 3x

Simplifying
y = 9.4 + 3x

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