10y-28=3y+21

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Solution for 10y-28=3y+21 equation:


Simplifying
10y + -28 = 3y + 21

Reorder the terms:
-28 + 10y = 3y + 21

Reorder the terms:
-28 + 10y = 21 + 3y

Solving
-28 + 10y = 21 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
-28 + 10y + -3y = 21 + 3y + -3y

Combine like terms: 10y + -3y = 7y
-28 + 7y = 21 + 3y + -3y

Combine like terms: 3y + -3y = 0
-28 + 7y = 21 + 0
-28 + 7y = 21

Add '28' to each side of the equation.
-28 + 28 + 7y = 21 + 28

Combine like terms: -28 + 28 = 0
0 + 7y = 21 + 28
7y = 21 + 28

Combine like terms: 21 + 28 = 49
7y = 49

Divide each side by '7'.
y = 7

Simplifying
y = 7

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