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If you mean: 7b+b+b then it is 9b simplified
It is: 7b+10 simplified
It is: 7b+4b-1b = 10b when simplified
If you mean: -3*(-2b-3)+7b then it is an algebraic expression that can be simplified to 6b+9+7b = 13b+9
If you mean: 6(-3b-1)+2(7b-1) then it is -4b-8 simplified
The given expression can be simplified to: 3b-a
the answer is 7b over 9b because the rule is numbers now letters later
Unless you know the value for b, then you can't, so it would be at its most simplified form.
160AC/140ABC = 8/7B
6a+7b. This cannot be simplified anymore unless you know a or b.
2a+2a-7b+7b =4a
The expression 2b x 5b can be simplified by multiplying the coefficients (2 and 5) together to get 10, and then multiplying the variables (b and b) together to get b^2. Therefore, the answer is 10b^2.