Question

0,4(1,5y+3)-2,5(3-0,6y)

Answer 1

0,6y + 1,2 - 7,5 + 1,5y =0 
2,1y - 6,3 = 0
2,1y = 6,3
y=3

Answer 2

0,6y+1,2-7,5+1,5y=1,9y-6,3

Answer 3

To solve the expression 0.4(1.5y + 3) - 2.5(3 - 0.6y), we can start by simplifying each term and then combining like terms.

Let's break it down step by step:

Step 1: Distribute the coefficients to the terms inside the parentheses.

0.4(1.5y + 3) becomes 0.4 * 1.5y + 0.4 * 3, which simplifies to 0.6y + 1.2.

Similarly, 2.5(3 - 0.6y) becomes 2.5 * 3 - 2.5 * 0.6y, which simplifies to 7.5 - 1.5y.

Now, the expression becomes 0.6y + 1.2 - (7.5 - 1.5y).

Step 2: Remove the parentheses and distribute the negative sign to each term inside the parentheses.

So, -(7.5 - 1.5y) becomes -7.5 + 1.5y.

Now, the expression becomes 0.6y + 1.2 - 7.5 + 1.5y.

Step 3: Combine like terms.

Combine the y terms: 0.6y + 1.5y = 2.1y.

Combine the constant terms: 1.2 - 7.5 = -6.3.

Now, the expression simplifies to 2.1y - 6.3.

Therefore, the simplified form of the expression 0.4(1.5y + 3) - 2.5(3 - 0.6y) is 2.1y - 6.3.