Question

0,4*(6x-7)=0,5*(3+7) 6y-(y-1,5)+7y=0,5+2y

Answer 1

Ответ:

0,4(6х-7)=0,5(3+7)

0,4(6х-7)=5

6х-7=12,5

6х=19,5

х=3,25

Пошаговое объяснение:

6у-(у-1,5)+7у=0,5+2у

12у+1,5=0,5+2у

10у= -1

у= -0,1

Answer 2

Let's solve the equations step by step:

1. 0.4(6x - 7) = 0.5(3 + 7)

First, simplify both sides of the equation:

2.4x - 2.8 = 0.5 * 10

Now, multiply 0.5 by 10:

2.4x - 2.8 = 5

Now, add 2.8 to both sides to isolate the variable (x):

2.4x - 2.8 + 2.8 = 5 + 2.8

2.4x = 7.8

Now, divide both sides by 2.4 to solve for x:

2.4x / 2.4 = 7.8 / 2.4

x = 7.8 / 2.4

x ≈ 3.25

2. 6y - (y - 1.5) + 7y = 0.5 + 2y

First, distribute the negative sign on the left side of the equation:

6y - y + 1.5 + 7y = 0.5 + 2y

Now, combine like terms on both sides of the equation:

6y - y + 7y + 7y - 2y = 0.5 + 1.5

Combine the y terms:

10y - 2y = 2

Now, subtract 2y from 10y:

8y = 2

Now, divide both sides by 8 to solve for y:

8y / 8 = 2 / 8

y = 1/4

So, the solutions to the equations are:

1. x ≈ 3.25
2. y = 1/4