Question

1) 2.3х-1.6х+8.9х 2) -15.16у +3.8у -1.4у​

Answer 1

2.3х+1.6х+8.9х=

1) 2.3х+1.6х=3.9х

2)3.9х+8.9х=12.8х.

Ответ: 12.8х

-15.16у+3.8у -1.4у​

1) -15.16у+3.8у=-11,36у.

2)-11,36-1.4у=-12,76у.

Ответ: -12,76у

Answer 2

It looks like you want to simplify these algebraic expressions. Let's simplify each one step by step:

1. 2.3x - 1.6x + 8.9x

Combine like terms by adding or subtracting coefficients of the same variable (x in this case):

2.3x - 1.6x + 8.9x = (2.3 - 1.6 + 8.9)x

Now, perform the addition and subtraction of coefficients:

(2.3 - 1.6 + 8.9)x = 9.6x

So, the simplified expression is 9.6x.

2. -15.16y + 3.8y - 1.4y

Again, combine like terms by adding or subtracting coefficients of the same variable (y in this case):

-15.16y + 3.8y - 1.4y = (-15.16 + 3.8 - 1.4)y

Now, perform the addition and subtraction of coefficients:

(-15.16 + 3.8 - 1.4)y = -12.76y

So, the simplified expression is -12.76y.