Question

(20+а)-11 упростить и решить

Answer 1

раскрыть скобки

20+a-11(вычитать числа 20-11)

9+a

Answer 2

To simplify the expression (20+a) - 11, you can start by combining like terms:

(20 + a) - 11

Combine 20 and -11:

(20 - 11) + a

Now, perform the subtraction:

9 + a

So the simplified expression is 9 + a.

To solve the equation, we need more information. If you have an equation that is equal to a certain value, you can set it equal to that value and solve for 'a'. For example, if you have the equation (20 + a) - 11 = 5, you can solve for 'a' as follows:

(20 + a) - 11 = 5

Combine 20 and -11:

(20 - 11) + a = 5

Perform the subtraction:

9 + a = 5

Now, isolate 'a' on one side of the equation. Since 9 is added to 'a', we need to do the opposite operation, which is subtracting 9 from both sides:

a = 5 - 9

a = -4

So the value of 'a' that satisfies the equation is -4.