2y+1+8y=21

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Solution for 2y+1+8y=21 equation:


Simplifying
2y + 1 + 8y = 21

Reorder the terms:
1 + 2y + 8y = 21

Combine like terms: 2y + 8y = 10y
1 + 10y = 21

Solving
1 + 10y = 21

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + 10y = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 10y = 21 + -1
10y = 21 + -1

Combine like terms: 21 + -1 = 20
10y = 20

Divide each side by '10'.
y = 2

Simplifying
y = 2

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