Question

1) 9a+3a 2)7x+3y-4x+5y

Answer 1

Пошаговое объяснение:

1)

$9a + 3a = 12a$

2)

$7x + 3y - 4x + 5y = 3y + 5y = 8y$

Answer 2

Ответ:

12а; 3х+8у.

Пошаговое объяснение:

Упростим выражения. Сгруппируем и приведем подобные члены.

9а + 3а = (9+3)а = 12а

7х + 3у - 4х + 5у = (7-4)х + (3+5)у = 3х + 8у

Answer 3

Let's simplify the given expressions:

1. 9a + 3a

Combine like terms by adding the coefficients of 'a': 9a + 3a = (9 + 3)a = 12a

So, the simplified expression is 12a.

2. 7x + 3y - 4x + 5y

Combine like terms by adding the coefficients of 'x' and 'y': 7x - 4x = (7 - 4)x = 3x 3y + 5y = (3 + 5)y = 8y

Now, we have simplified the expression: 7x + 3y - 4x + 5y = (3x) + (8y) = 3x + 8y

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