y+20+2y+1+7y-11=90

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Solution for y+20+2y+1+7y-11=90 equation:


Simplifying
y + 20 + 2y + 1 + 7y + -11 = 90

Reorder the terms:
20 + 1 + -11 + y + 2y + 7y = 90

Combine like terms: 20 + 1 = 21
21 + -11 + y + 2y + 7y = 90

Combine like terms: 21 + -11 = 10
10 + y + 2y + 7y = 90

Combine like terms: y + 2y = 3y
10 + 3y + 7y = 90

Combine like terms: 3y + 7y = 10y
10 + 10y = 90

Solving
10 + 10y = 90

Solving for variable 'y'.

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

Add '-10' to each side of the equation.
10 + -10 + 10y = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 10y = 90 + -10
10y = 90 + -10

Combine like terms: 90 + -10 = 80
10y = 80

Divide each side by '10'.
y = 8

Simplifying
y = 8

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