Question

(15y+30)×(1,5-0,3y)=0​

Answer 1

Відповідь:y=-2 или y=5

Покрокове пояснення:

(15y+30)=0 або (1,5-0,3y)=0

15y=0-30 -0,3y=0-1,5

15y=-30 -0,3y=-1,5

y=-30:15 y=-1,5:(-0,3)

y=-2 y=5

Answer 2

15у×1,5 -15×0,3у+30×1,5-30×0,3у=0

22,5у-4,5у+45-9у=0

22,5у-4,5у-9у= -45

9у= - 45

у=-5

Ответ у = -5

Answer 3

To solve the equation (15y + 30) * (1.5 - 0.3y) = 0, you can use the zero-product property, which states that if the product of two factors is equal to zero, then at least one of the factors must be equal to zero. So, you can set each factor equal to zero and solve for 'y'.

1. Set the first factor equal to zero: 15y + 30 = 0

Subtract 30 from both sides:

15y = -30

Now, divide both sides by 15 to solve for 'y':

y = -30 / 15 y = -2

2. Set the second factor equal to zero: 1.5 - 0.3y = 0

Subtract 1.5 from both sides:

-0.3y = -1.5

Now, divide both sides by -0.3 to solve for 'y':

y = (-1.5) / (-0.3) y = 5

So, the solutions to the equation are y = -2 and y = 5.