10-4[6(2a+5)-(20+10a)]-2a=0

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Solution for 10-4[6(2a+5)-(20+10a)]-2a=0 equation:


Simplifying
10 + -4[6(2a + 5) + -1(20 + 10a)] + -2a = 0

Reorder the terms:
10 + -4[6(5 + 2a) + -1(20 + 10a)] + -2a = 0
10 + -4[(5 * 6 + 2a * 6) + -1(20 + 10a)] + -2a = 0
10 + -4[(30 + 12a) + -1(20 + 10a)] + -2a = 0
10 + -4[30 + 12a + (20 * -1 + 10a * -1)] + -2a = 0
10 + -4[30 + 12a + (-20 + -10a)] + -2a = 0

Reorder the terms:
10 + -4[30 + -20 + 12a + -10a] + -2a = 0

Combine like terms: 30 + -20 = 10
10 + -4[10 + 12a + -10a] + -2a = 0

Combine like terms: 12a + -10a = 2a
10 + -4[10 + 2a] + -2a = 0
10 + [10 * -4 + 2a * -4] + -2a = 0
10 + [-40 + -8a] + -2a = 0

Combine like terms: 10 + -40 = -30
-30 + -8a + -2a = 0

Combine like terms: -8a + -2a = -10a
-30 + -10a = 0

Solving
-30 + -10a = 0

Solving for variable 'a'.

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

Add '30' to each side of the equation.
-30 + 30 + -10a = 0 + 30

Combine like terms: -30 + 30 = 0
0 + -10a = 0 + 30
-10a = 0 + 30

Combine like terms: 0 + 30 = 30
-10a = 30

Divide each side by '-10'.
a = -3

Simplifying
a = -3

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