0.7y-0.8(y-1)=2

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Solution for 0.7y-0.8(y-1)=2 equation: 


Simplifying
0.7y + -0.8(y + -1) = 2

Reorder the terms:
0.7y + -0.8(-1 + y) = 2
0.7y + (-1 * -0.8 + y * -0.8) = 2
0.7y + (0.8 + -0.8y) = 2

Reorder the terms:
0.8 + 0.7y + -0.8y = 2

Combine like terms: 0.7y + -0.8y = -0.1y
0.8 + -0.1y = 2

Solving
0.8 + -0.1y = 2

Solving for variable 'y'.

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

Add '-0.8' to each side of the equation.
0.8 + -0.8 + -0.1y = 2 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + -0.1y = 2 + -0.8
-0.1y = 2 + -0.8

Combine like terms: 2 + -0.8 = 1.2
-0.1y = 1.2

Divide each side by '-0.1'.
y = -12

Simplifying
y = -12

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