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

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


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

Reorder the terms:
3(-7 + 2a) = -3a + 15 + -3a
(-7 * 3 + 2a * 3) = -3a + 15 + -3a
(-21 + 6a) = -3a + 15 + -3a

Reorder the terms:
-21 + 6a = 15 + -3a + -3a

Combine like terms: -3a + -3a = -6a
-21 + 6a = 15 + -6a

Solving
-21 + 6a = 15 + -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
-21 + 6a + 6a = 15 + -6a + 6a

Combine like terms: 6a + 6a = 12a
-21 + 12a = 15 + -6a + 6a

Combine like terms: -6a + 6a = 0
-21 + 12a = 15 + 0
-21 + 12a = 15

Add '21' to each side of the equation.
-21 + 21 + 12a = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 12a = 15 + 21
12a = 15 + 21

Combine like terms: 15 + 21 = 36
12a = 36

Divide each side by '12'.
a = 3

Simplifying
a = 3

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