2*1-y=-7

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Solution for 2*1-y=-7 equation: 


Simplifying
2 * 1 + -1y = -7

Multiply 2 * 1
2 + -1y = -7

Solving
2 + -1y = -7

Solving for variable 'y'.

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

Add '-2' to each side of the equation.
2 + -2 + -1y = -7 + -2

Combine like terms: 2 + -2 = 0
0 + -1y = -7 + -2
-1y = -7 + -2

Combine like terms: -7 + -2 = -9
-1y = -9

Divide each side by '-1'.
y = 9

Simplifying
y = 9

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