Question

(0,8y+3,2):2/5-7,2=1,8

Answer 1

Пошаговое объяснение:

(0,8y+3,2):2/5-7,2=1,8

(0,8y+3,2):0,4=1,8+7,2

(0,8y+3,2):0,4=9

(0,8y+3,2)=3,6

0,8у=0,4

у=0,5

Answer 2

To solve the expression (0,8y + 3,2) : 2/5 - 7,2 = 1,8, let's break it down step by step.

First, let's simplify the division (0,8y + 3,2) : 2/5:

(0,8y + 3,2) : 2/5 = (0,8y + 3,2) * (5/2)

Now, let's distribute the multiplication:

(0,8y + 3,2) * (5/2) = 0,8y * (5/2) + 3,2 * (5/2)

Next, simplify the multiplications:

0,8y * (5/2) = 4y/2 = 2y 3,2 * (5/2) = 16/2 = 8

So, the expression becomes:

2y + 8 - 7,2 = 1,8

Now, let's solve for y:

2y + 8 - 7,2 = 1,8

Combine like terms:

2y + 0,8 = 1,8

Subtract 0,8 from both sides:

2y = 1,8 - 0,8

2y = 1

Finally, divide both sides by 2:

y = 1/2

Therefore, the solution to the expression (0,8y + 3,2) : 2/5 - 7,2 = 1,8 is y = 1/2.