Question

A>b оценить 4a и 4b;-7a и -7b;a-2 и b-2

Answer 1

4a>4b

-7a<-7b

A-2>b-2.

Answer 2

It's not entirely clear what you are asking for, but assuming that A and B are variables, here are some possible calculations:

1. A > B:

If A is greater than B, then we can't say for sure what 4A and 4B are, but we can make some observations:

• 4A is definitely greater than 4B.
• If we subtract 7A from both sides of the inequality, we get -3A > -7B.
• Similarly, if we subtract 7B from both sides, we get 4A > -6B.
• If we add those two inequalities, we get 7A > -13B.
• If we subtract them, we get A > 2B/3.
• So we know that A is at least 2/3 of B.

2. Evaluating expressions:

• 4A and 4B: if A = 1 and B = 2, then 4A = 4 and 4B = 8.
• -7A and -7B: if A = 3 and B = -4, then -7A = -21 and -7B = 28.
• A-2 and B-2: if A = 5 and B = 7, then A-2 = 3 and B-2 = 5.

Note that the values of the expressions depend on the specific values of A and B chosen, so these results are only examples.