3a + (3b - 2a) + 5b =
3a + 3b - 2a + 5b =
(3a - 2a) + (3b + 5b) =
a + 8b
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3a+5b+7a=
It is an expression that can be simplified to: 3a-2b+c
3a - 2b
a + 7b + 2c
To factor the expression 15a - 25b + 20, we first look for common factors among the terms. The greatest common factor among the coefficients is 5. We can then factor out 5 to get 5(3a - 5b + 4). This is the factored form of the expression 15a - 25b + 20.