(9y^4-6y^3-5y+7)+(18y^4-2y^3-7y+8)=

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Solution for (9y^4-6y^3-5y+7)+(18y^4-2y^3-7y+8)= equation: 


Simplifying
(9y4 + -6y3 + -5y + 7) + (18y4 + -2y3 + -7y + 8) = 0

Reorder the terms:
(7 + -5y + -6y3 + 9y4) + (18y4 + -2y3 + -7y + 8) = 0

Remove parenthesis around (7 + -5y + -6y3 + 9y4)
7 + -5y + -6y3 + 9y4 + (18y4 + -2y3 + -7y + 8) = 0

Reorder the terms:
7 + -5y + -6y3 + 9y4 + (8 + -7y + -2y3 + 18y4) = 0

Remove parenthesis around (8 + -7y + -2y3 + 18y4)
7 + -5y + -6y3 + 9y4 + 8 + -7y + -2y3 + 18y4 = 0

Reorder the terms:
7 + 8 + -5y + -7y + -6y3 + -2y3 + 9y4 + 18y4 = 0

Combine like terms: 7 + 8 = 15
15 + -5y + -7y + -6y3 + -2y3 + 9y4 + 18y4 = 0

Combine like terms: -5y + -7y = -12y
15 + -12y + -6y3 + -2y3 + 9y4 + 18y4 = 0

Combine like terms: -6y3 + -2y3 = -8y3
15 + -12y + -8y3 + 9y4 + 18y4 = 0

Combine like terms: 9y4 + 18y4 = 27y4
15 + -12y + -8y3 + 27y4 = 0

Solving
15 + -12y + -8y3 + 27y4 = 0

Solving for variable 'y'.

The solution to this equation could not be determined.

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