7(a+1)=28

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Solution for 7(a+1)=28 equation: 


Simplifying
7(a + 1) = 28

Reorder the terms:
7(1 + a) = 28
(1 * 7 + a * 7) = 28
(7 + 7a) = 28

Solving
7 + 7a = 28

Solving for variable 'a'.

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

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

Combine like terms: 7 + -7 = 0
0 + 7a = 28 + -7
7a = 28 + -7

Combine like terms: 28 + -7 = 21
7a = 21

Divide each side by '7'.
a = 3

Simplifying
a = 3

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