-20=5(2a-4)-3a

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Solution for -20=5(2a-4)-3a equation:


Simplifying
-20 = 5(2a + -4) + -3a

Reorder the terms:
-20 = 5(-4 + 2a) + -3a
-20 = (-4 * 5 + 2a * 5) + -3a
-20 = (-20 + 10a) + -3a

Combine like terms: 10a + -3a = 7a
-20 = -20 + 7a

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

Combine like terms: -20 + 20 = 0
0 = -20 + 20 + 7a

Combine like terms: -20 + 20 = 0
0 = 0 + 7a
0 = 7a

Solving
0 = 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
0 + -7a = 7a + -7a
Remove the zero:
-7a = 7a + -7a

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

Divide each side by '-7'.
a = 0

Simplifying
a = 0

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