Question

3(0,2y-5)-4(0,3y-5)=10+0.4y​

Answer 1

(0,6y-15)-(1,2y-20)=10+0,4y

0,6y-15-1,2y+20=10+0,4y

0,6y-1,2y-0,4y=10+15-20

-y=5

Y=-5

Answer 2

Let's solve the given expression step by step:

1. 3(0, 2y - 5) = (0, 6y - 15) Distribute the 3 to both terms inside the parentheses.

2. 4(0, 3y - 5) = (0, 12y - 20) Distribute the 4 to both terms inside the parentheses.

Now, we have:

(0, 6y - 15) - (0, 12y - 20) = 10 + 0.4y

To simplify the left side of the equation, we need to subtract the corresponding components:

(0 - 0, (6y - 15) - (12y - 20)) = 10 + 0.4y

Simplifying further:

(0, -6y + 5) = 10 + 0.4y

Now, equate the y-components:

-6y + 5 = 10 + 0.4y

To solve for y, let's first gather the y terms on one side:

-6y - 0.4y = 10 - 5

Now, combine the y terms:

-6.4y = 5

Finally, isolate y by dividing both sides by -6.4:

y = 5 / -6.4

y ≈ -0.78125

So, the solution for y is approximately -0.78125.