Question

Напишите ответ:1)6c-3d+c-1=? 2)11x-8y+2x+8y=? 3)7,2x+0,8y-1.2x+2.2y=?

Answer 1

1) 7c-3d-1
2)13x
3)6x+3y

Answer 2

1)7с-3d-1
2)13x
3)6x+3y

Answer 3

1) To simplify the expression 6c-3d+c-1, we can combine like terms. Like terms are terms that have the same variable(s) raised to the same power(s).

In this expression, we have two terms with the variable "c" and one term with the variable "d". Therefore, we can combine the terms with "c" and the terms with "d" separately.

Combining the terms with "c", we have 6c + c = 7c.

Combining the terms with "d", we have -3d.

Now, we can put these simplified terms together to get the final expression:

7c - 3d - 1.

So, the simplified expression for 6c-3d+c-1 is 7c - 3d - 1.

2) Similarly, to simplify the expression 11x-8y+2x+8y, we can combine like terms.

In this expression, we have two terms with the variable "x" and two terms with the variable "y". Therefore, we can combine the terms with "x" and the terms with "y" separately.

Combining the terms with "x", we have 11x + 2x = 13x.

Combining the terms with "y", we have -8y + 8y = 0 (since these terms cancel each other out).

Now, we can put these simplified terms together to get the final expression:

13x + 0.

So, the simplified expression for 11x-8y+2x+8y is 13x.

3) Moving on to the expression 7.2x+0.8y-1.2x+2.2y, we can again combine like terms.

In this expression, we have two terms with the variable "x" and two terms with the variable "y". Therefore, we can combine the terms with "x" and the terms with "y" separately.

Combining the terms with "x", we have 7.2x - 1.2x = 6x.

Combining the terms with "y", we have 0.8y + 2.2y = 3y.

Now, we can put these simplified terms together to get the final expression:

6x + 3y.

So, the simplified expression for 7.2x+0.8y-1.2x+2.2y is 6x + 3y.