Question

3. .22---- + 1---- =?7. .7​

Answer 1

Ответ:

Щоб додати десяткові дроби, потрібно спочатку вирівняти їх за допомогою доповнення до 1. Для цього додамо до першого доданка 0.78, а до другого - 0.07:

3.22 + 0.78

+ 1.00 + 0.07

----------------

4.00

Отже, сума дорівнює 4.00.

Пошаговое объяснение:

Answer 2

It appears that you're trying to solve an equation, but the notation you've provided is a bit unclear. However, I'll try to interpret it as best I can.

If you want to solve for the missing digits represented by "--" in the equation:

0.22 -- + 1 -- = ?7.7

First, let's subtract 0.22 from ?7.7:

?7.7 - 0.22 = ?7.48

Now, to make the equation balance, the missing digits in "?7.48" must be "3" and "1" to get "?7348."

So, the equation would be:

0.22 + 1.31 = 7.7

And when you add 0.22 and 1.31 together, you get 1.53:

0.22 + 1.31 = 1.53

So, the equation "?7.7" would be balanced with "?7.53," making the equation:

0.22 + 1.31 = ?7.53