21-7-Y=14-7

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Solution for 21-7-Y=14-7 equation:


Simplifying
21 + -7 + -1Y = 14 + -7

Combine like terms: 21 + -7 = 14
14 + -1Y = 14 + -7

Combine like terms: 14 + -7 = 7
14 + -1Y = 7

Solving
14 + -1Y = 7

Solving for variable 'Y'.

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

Add '-14' to each side of the equation.
14 + -14 + -1Y = 7 + -14

Combine like terms: 14 + -14 = 0
0 + -1Y = 7 + -14
-1Y = 7 + -14

Combine like terms: 7 + -14 = -7
-1Y = -7

Divide each side by '-1'.
Y = 7

Simplifying
Y = 7

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