(17-y)-2(21+y)=

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Solution for (17-y)-2(21+y)= equation:


Simplifying
(17 + -1y) + -2(21 + y) = 0

Remove parenthesis around (17 + -1y)
17 + -1y + -2(21 + y) = 0
17 + -1y + (21 * -2 + y * -2) = 0
17 + -1y + (-42 + -2y) = 0

Reorder the terms:
17 + -42 + -1y + -2y = 0

Combine like terms: 17 + -42 = -25
-25 + -1y + -2y = 0

Combine like terms: -1y + -2y = -3y
-25 + -3y = 0

Solving
-25 + -3y = 0

Solving for variable 'y'.

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

Add '25' to each side of the equation.
-25 + 25 + -3y = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -3y = 0 + 25
-3y = 0 + 25

Combine like terms: 0 + 25 = 25
-3y = 25

Divide each side by '-3'.
y = -8.333333333

Simplifying
y = -8.333333333

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