3(2a-7-a)=

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


Simplifying
3(2a + -7 + -1a) = 0

Reorder the terms:
3(-7 + 2a + -1a) = 0

Combine like terms: 2a + -1a = 1a
3(-7 + 1a) = 0
(-7 * 3 + 1a * 3) = 0
(-21 + 3a) = 0

Solving
-21 + 3a = 0

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 + 3a = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 3a = 0 + 21
3a = 0 + 21

Combine like terms: 0 + 21 = 21
3a = 21

Divide each side by '3'.
a = 7

Simplifying
a = 7

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