So, -(a-3b) becomes -1(a-3b). Then, this becomes 5a-1a+3b. There is +3b because there is a double negative. So, 5-1=4, so your answer is 4a+3b. Pls brainliest
Answer:
11 ≤ n
Explanation:

More than indicates the minimum value, so you use the greater than or equal to.
The above answer is written in reverse, which the exact same result.
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Answer:
1/4
Step-by-step explanation:
15/60 = 1/4
Answer:
25b?
Step-by-step explanation:
Answer:
3m-3n
Step-by-step explanation:
We want to simplify the expression;
2m - [n - (m - 2n)].
We expand the parenthesis to obtain;
2m - (n - m + 2n)
2m - ( - m + 3n)
Expand further to get;
2m +m -3n
Combine the first two terms;
3m-3n