9+7Y=21

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Solution for 9+7Y=21 equation: 


Simplifying
9 + 7Y = 21

Solving
9 + 7Y = 21

Solving for variable 'Y'.

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

Add '-9' to each side of the equation.
9 + -9 + 7Y = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 7Y = 21 + -9
7Y = 21 + -9

Combine like terms: 21 + -9 = 12
7Y = 12

Divide each side by '7'.
Y = 1.714285714

Simplifying
Y = 1.714285714

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