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-2a + 5 = 1 -2a = -5 + 1 -2a = -4 a = -4/-2 a = 2
a = 4
2ab - 3b2 - 3b + 2a does not have a solution, as it is not an equation.
depends what 'a' =
a + a + a - 2a = 3a - 2a = a