5y-21=-7

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Solution for 5y-21=-7 equation: 


Simplifying
5y + -21 = -7

Reorder the terms:
-21 + 5y = -7

Solving
-21 + 5y = -7

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + 5y = -7 + 21

Combine like terms: -21 + 21 = 0
0 + 5y = -7 + 21
5y = -7 + 21

Combine like terms: -7 + 21 = 14
5y = 14

Divide each side by '5'.
y = 2.8

Simplifying
y = 2.8

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