-21-20=10+8y

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Solution for -21-20=10+8y equation:


Simplifying
-21 + -20 = 10 + 8y

Combine like terms: -21 + -20 = -41
-41 = 10 + 8y

Solving
-41 = 10 + 8y

Solving for variable 'y'.

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

Add '-8y' to each side of the equation.
-41 + -8y = 10 + 8y + -8y

Combine like terms: 8y + -8y = 0
-41 + -8y = 10 + 0
-41 + -8y = 10

Add '41' to each side of the equation.
-41 + 41 + -8y = 10 + 41

Combine like terms: -41 + 41 = 0
0 + -8y = 10 + 41
-8y = 10 + 41

Combine like terms: 10 + 41 = 51
-8y = 51

Divide each side by '-8'.
y = -6.375

Simplifying
y = -6.375

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