Question

7a+7b, якщо а+b = 14

Answer 1

Ответ:

Пошаговое объяснение:

7а+7б=7*(а+б)=7*14=98

Answer 2

7(а+b);
так как а+b = 14;
7*14 = 98.

Answer 3

To find the value of 7a + 7b when a + b = 14, we can start by solving for one of the variables (a or b) in terms of the other variable and then substituting that expression into the equation for 7a + 7b.

Given that a + b = 14, we can solve for a in terms of b:

a = 14 - b

Now, let's substitute this expression for a into the equation for 7a + 7b:

7a + 7b = 7(14 - b) + 7b

Now, distribute the 7 on the left side:

7a + 7b = 98 - 7b + 7b

The -7b and +7b terms cancel each other out, leaving us with:

7a + 7b = 98

So, when a + b = 14, the value of 7a + 7b is 98.