7(2a+3)=105

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Solution for 7(2a+3)=105 equation:


Simplifying
7(2a + 3) = 105

Reorder the terms:
7(3 + 2a) = 105
(3 * 7 + 2a * 7) = 105
(21 + 14a) = 105

Solving
21 + 14a = 105

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 14a = 105 + -21

Combine like terms: 21 + -21 = 0
0 + 14a = 105 + -21
14a = 105 + -21

Combine like terms: 105 + -21 = 84
14a = 84

Divide each side by '14'.
a = 6

Simplifying
a = 6

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