Question

Упростите выражения:а)(7x+y)-(-x-2y)б)(b-3)-(2b+2)Помогиите плееез,очень срочно надо !!!!

Answer 1

А) (7х+у)-(-х-2у)=7х+у+х+2у=7х+х+у+2у=8х+3у
б) (b-3)-(2b+2)=b-3-2b-2=b-2b-3-2=-b-5
сначала раскрываем скобки, затем приводим подобные

Answer 2

7х+у+х+2у=8х+3у
б-3-2б-2=-б-5

Answer 3

Simplifying Expressions

a) To simplify the expression (7x+y)-(-x-2y), we can follow these steps:

1. Distribute the negative sign inside the parentheses: (7x+y) + (x+2y).

2. Combine like terms: 7x + x + y + 2y.

3. Simplify further by adding the coefficients of like terms: 8x + 3y.

Therefore, the simplified expression is 8x + 3y.

b) To simplify the expression (b-3)-(2b+2), we can follow these steps:

1. Distribute the negative sign inside the parentheses: (b-3) - 2b - 2.

2. Combine like terms: b - 2b - 3 - 2.

3. Simplify further by adding the coefficients of like terms: -b - 5.

Therefore, the simplified expression is -b - 5.

I hope this helps! Let me know if you have any further questions.