2(4)+5y=21

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Solution for 2(4)+5y=21 equation: 


Simplifying
2(4) + 5y = 21

Multiply 2 * 4
8 + 5y = 21

Solving
8 + 5y = 21

Solving for variable 'y'.

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

Add '-8' to each side of the equation.
8 + -8 + 5y = 21 + -8

Combine like terms: 8 + -8 = 0
0 + 5y = 21 + -8
5y = 21 + -8

Combine like terms: 21 + -8 = 13
5y = 13

Divide each side by '5'.
y = 2.6

Simplifying
y = 2.6

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