2-1+2y=8

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Solution for 2-1+2y=8 equation: 


Simplifying
2 + -1 + 2y = 8

Combine like terms: 2 + -1 = 1
1 + 2y = 8

Solving
1 + 2y = 8

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 + 2y = 8 + -1

Combine like terms: 1 + -1 = 0
0 + 2y = 8 + -1
2y = 8 + -1

Combine like terms: 8 + -1 = 7
2y = 7

Divide each side by '2'.
y = 3.5

Simplifying
y = 3.5

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