6a+3(a-7)=2a+8

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Solution for 6a+3(a-7)=2a+8 equation:


Simplifying
6a + 3(a + -7) = 2a + 8

Reorder the terms:
6a + 3(-7 + a) = 2a + 8
6a + (-7 * 3 + a * 3) = 2a + 8
6a + (-21 + 3a) = 2a + 8

Reorder the terms:
-21 + 6a + 3a = 2a + 8

Combine like terms: 6a + 3a = 9a
-21 + 9a = 2a + 8

Reorder the terms:
-21 + 9a = 8 + 2a

Solving
-21 + 9a = 8 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-21 + 9a + -2a = 8 + 2a + -2a

Combine like terms: 9a + -2a = 7a
-21 + 7a = 8 + 2a + -2a

Combine like terms: 2a + -2a = 0
-21 + 7a = 8 + 0
-21 + 7a = 8

Add '21' to each side of the equation.
-21 + 21 + 7a = 8 + 21

Combine like terms: -21 + 21 = 0
0 + 7a = 8 + 21
7a = 8 + 21

Combine like terms: 8 + 21 = 29
7a = 29

Divide each side by '7'.
a = 4.142857143

Simplifying
a = 4.142857143

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