3=2(-2a-10)-1

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Solution for 3=2(-2a-10)-1 equation:


Simplifying
3 = 2(-2a + -10) + -1

Reorder the terms:
3 = 2(-10 + -2a) + -1
3 = (-10 * 2 + -2a * 2) + -1
3 = (-20 + -4a) + -1

Reorder the terms:
3 = -20 + -1 + -4a

Combine like terms: -20 + -1 = -21
3 = -21 + -4a

Solving
3 = -21 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
3 + 4a = -21 + -4a + 4a

Combine like terms: -4a + 4a = 0
3 + 4a = -21 + 0
3 + 4a = -21

Add '-3' to each side of the equation.
3 + -3 + 4a = -21 + -3

Combine like terms: 3 + -3 = 0
0 + 4a = -21 + -3
4a = -21 + -3

Combine like terms: -21 + -3 = -24
4a = -24

Divide each side by '4'.
a = -6

Simplifying
a = -6

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