7(2a+3)-15=3(4a+7)-3

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Solution for 7(2a+3)-15=3(4a+7)-3 equation:


Simplifying
7(2a + 3) + -15 = 3(4a + 7) + -3

Reorder the terms:
7(3 + 2a) + -15 = 3(4a + 7) + -3
(3 * 7 + 2a * 7) + -15 = 3(4a + 7) + -3
(21 + 14a) + -15 = 3(4a + 7) + -3

Reorder the terms:
21 + -15 + 14a = 3(4a + 7) + -3

Combine like terms: 21 + -15 = 6
6 + 14a = 3(4a + 7) + -3

Reorder the terms:
6 + 14a = 3(7 + 4a) + -3
6 + 14a = (7 * 3 + 4a * 3) + -3
6 + 14a = (21 + 12a) + -3

Reorder the terms:
6 + 14a = 21 + -3 + 12a

Combine like terms: 21 + -3 = 18
6 + 14a = 18 + 12a

Solving
6 + 14a = 18 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
6 + 14a + -12a = 18 + 12a + -12a

Combine like terms: 14a + -12a = 2a
6 + 2a = 18 + 12a + -12a

Combine like terms: 12a + -12a = 0
6 + 2a = 18 + 0
6 + 2a = 18

Add '-6' to each side of the equation.
6 + -6 + 2a = 18 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = 18 + -6
2a = 18 + -6

Combine like terms: 18 + -6 = 12
2a = 12

Divide each side by '2'.
a = 6

Simplifying
a = 6

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