5y-2(21)=3

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Solution for 5y-2(21)=3 equation: 


Simplifying
5y + -2(21) = 3

Multiply -2 * 21
5y + -42 = 3

Reorder the terms:
-42 + 5y = 3

Solving
-42 + 5y = 3

Solving for variable 'y'.

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

Add '42' to each side of the equation.
-42 + 42 + 5y = 3 + 42

Combine like terms: -42 + 42 = 0
0 + 5y = 3 + 42
5y = 3 + 42

Combine like terms: 3 + 42 = 45
5y = 45

Divide each side by '5'.
y = 9

Simplifying
y = 9

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