=2a-(-3a)-7a+8b-b+(-2b)

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Solution for =2a-(-3a)-7a+8b-b+(-2b) equation:


Simplifying
0 = 2a + -1(-3a) + -7a + 8b + -1b + (-2b)

Remove parenthesis around (-3a)
0 = 2a + -1 * -3a + -7a + 8b + -1b + (-2b)

Multiply -1 * -3
0 = 2a + 3a + -7a + 8b + -1b + (-2b)

Combine like terms: 2a + 3a = 5a
0 = 5a + -7a + 8b + -1b + (-2b)

Combine like terms: 5a + -7a = -2a
0 = -2a + 8b + -1b + (-2b)

Combine like terms: 8b + -1b = 7b
0 = -2a + 7b + (-2b)

Combine like terms: 7b + (-2b) = 5b
0 = -2a + 5b

Solving
0 = -2a + 5b

Solving for variable 'a'.

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

Add '2a' to each side of the equation.
0 + 2a = -2a + 2a + 5b
Remove the zero:
2a = -2a + 2a + 5b

Combine like terms: -2a + 2a = 0
2a = 0 + 5b
2a = 5b

Divide each side by '2'.
a = 2.5b

Simplifying
a = 2.5b

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