3y-(2y+1)=21

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Solution for 3y-(2y+1)=21 equation:


Simplifying
3y + -1(2y + 1) = 21

Reorder the terms:
3y + -1(1 + 2y) = 21
3y + (1 * -1 + 2y * -1) = 21
3y + (-1 + -2y) = 21

Reorder the terms:
-1 + 3y + -2y = 21

Combine like terms: 3y + -2y = 1y
-1 + 1y = 21

Solving
-1 + 1y = 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 + 1y = 21 + 1

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

Combine like terms: 21 + 1 = 22
1y = 22

Divide each side by '1'.
y = 22

Simplifying
y = 22

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