7(1+2y)=21

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Solution for 7(1+2y)=21 equation: 


Simplifying
7(1 + 2y) = 21
(1 * 7 + 2y * 7) = 21
(7 + 14y) = 21

Solving
7 + 14y = 21

Solving for variable 'y'.

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

Add '-7' to each side of the equation.
7 + -7 + 14y = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 14y = 21 + -7
14y = 21 + -7

Combine like terms: 21 + -7 = 14
14y = 14

Divide each side by '14'.
y = 1

Simplifying
y = 1

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