7a-[(a+3b)-(2a-2b)]=

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Solution for 7a-[(a+3b)-(2a-2b)]= equation:


Simplifying
7a + -1[(a + 3b) + -1(2a + -2b)] = 0

Remove parenthesis around (a + 3b)
7a + -1[a + 3b + -1(2a + -2b)] = 0
7a + -1[a + 3b + (2a * -1 + -2b * -1)] = 0
7a + -1[a + 3b + (-2a + 2b)] = 0

Reorder the terms:
7a + -1[a + -2a + 3b + 2b] = 0

Combine like terms: a + -2a = -1a
7a + -1[-1a + 3b + 2b] = 0

Combine like terms: 3b + 2b = 5b
7a + -1[-1a + 5b] = 0
7a + [-1a * -1 + 5b * -1] = 0
7a + [1a + -5b] = 0

Combine like terms: 7a + 1a = 8a
8a + -5b = 0

Solving
8a + -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.
8a + -5b + 5b = 0 + 5b

Combine like terms: -5b + 5b = 0
8a + 0 = 0 + 5b
8a = 0 + 5b
Remove the zero:
8a = 5b

Divide each side by '8'.
a = 0.625b

Simplifying
a = 0.625b

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