2[a+2b]-[a-b]=

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Solution for 2[a+2b]-[a-b]= equation:


Simplifying
2[a + 2b] + -1[a + -1b] = 0
[a * 2 + 2b * 2] + -1[a + -1b] = 0
[2a + 4b] + -1[a + -1b] = 0
2a + 4b + [a * -1 + -1b * -1] = 0
2a + 4b + [-1a + 1b] = 0

Reorder the terms:
2a + -1a + 4b + 1b = 0

Combine like terms: 2a + -1a = 1a
1a + 4b + 1b = 0

Combine like terms: 4b + 1b = 5b
1a + 5b = 0

Solving
1a + 5b = 0

Solving for variable 'a'.

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

Add '-5b' to each side of the equation.
1a + 5b + -5b = 0 + -5b

Combine like terms: 5b + -5b = 0
1a + 0 = 0 + -5b
1a = 0 + -5b
Remove the zero:
1a = -5b

Divide each side by '1'.
a = -5b

Simplifying
a = -5b

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