(3a-6a)-7=-20

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Solution for (3a-6a)-7=-20 equation:


Simplifying
(3a + -6a) + -7 = -20

Combine like terms: 3a + -6a = -3a
(-3a) + -7 = -20
(-3a) + -7 = -20

Reorder the terms:
-7 + (-3a) = -20

Solving
-7 + (-3a) = -20

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + (-3a) = -20 + 7

Combine like terms: -7 + 7 = 0
0 + (-3a) = -20 + 7
(-3a) = -20 + 7

Combine like terms: -20 + 7 = -13
(-3a) = -13

Divide each side by '-3'.
a = 4.333333333

Simplifying
a = 4.333333333

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