9y-1+8y+4=90

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Solution for 9y-1+8y+4=90 equation:


Simplifying
9y + -1 + 8y + 4 = 90

Reorder the terms:
-1 + 4 + 9y + 8y = 90

Combine like terms: -1 + 4 = 3
3 + 9y + 8y = 90

Combine like terms: 9y + 8y = 17y
3 + 17y = 90

Solving
3 + 17y = 90

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 17y = 90 + -3

Combine like terms: 3 + -3 = 0
0 + 17y = 90 + -3
17y = 90 + -3

Combine like terms: 90 + -3 = 87
17y = 87

Divide each side by '17'.
y = 5.117647059

Simplifying
y = 5.117647059

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