3(5)+5y=21

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Solution for 3(5)+5y=21 equation: 


Simplifying
3(5) + 5y = 21

Multiply 3 * 5
15 + 5y = 21

Solving
15 + 5y = 21

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + 5y = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 5y = 21 + -15
5y = 21 + -15

Combine like terms: 21 + -15 = 6
5y = 6

Divide each side by '5'.
y = 1.2

Simplifying
y = 1.2

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