Question

2(y-3.5)=7+3.6(2y-1)

Answer 1

РЕШЕНИЕ НА ФОТОГРАФИИ

Answer 2

Надеюсь понятно. Я сначала подумал, что система - оказалось просто уравнение 
 

Answer 3

Let's solve the given equation step-by-step:

2(y - 3.5) = 7 + 3.6(2y - 1)

Step 1: Distribute the 3.6 on the right side of the equation:

2(y - 3.5) = 7 + 7.2y - 3.6

Step 2: Expand the left side of the equation:

2y - 7 = 7 + 7.2y - 3.6

Step 3: Combine like terms on the right side of the equation:

2y - 7 = 7.2y + 3.4

Step 4: Move all the y terms to one side of the equation and constants to the other side:

2y - 7.2y = 3.4 + 7

Step 5: Combine like terms:

-5.2y = 10.4

Step 6: Divide both sides by -5.2 to solve for y:

y = 10.4 / -5.2

y = -2

So, the solution to the equation is y = -2.