Question

Помогите с уравнениями. х-0,7=4х-10 5(13-2х)=-19-13х -5(0,8у-2,4)=-у+14,4 спасибо)))

Answer 1

Х-0,7=4х-10
х-4х=-10+0,7
-3х=-9,3
х=-9,3:(-3)
х=3,1

5(13-2х)=-19-13х
65-10х=-19-13х
-10х+13х=-19-65
3х=-84
х=-84:3
х=-28

-5(0,8у-2,4)=-у+14,4
-4у+12=-у+14,4
-4у+у=14,4-12
-3у=2,4
у=2,4:(-3)
у=-0,8

Answer 2

Solving the Equations

Let's solve the given set of equations step by step.

1. Solving for x in the first equation: - The first equation is: x - 0.7 = 4x - 10. - To solve for x, we can start by isolating x on one side of the equation.

   x - 0.7 = 4x - 10
   x - 4x = -10 + 0.7
   -3x = -9.3
   x = -9.3 / -3
   x = 3.1
   

Therefore, x = 3.1.

2. Solving for y in the second equation: - The second equation is: 5(13 - 2x) = -19 - 13x. - We can start by distributing the 5 on the left side of the equation.

   5(13 - 2x) = -19 - 13x
   65 - 10x = -19 - 13x
   65 + 19 = -13x + 10x
   84 = -3x
   x = -84 / -3
   x = 28
   

Therefore, x = 28.

3. Solving for y in the third equation: - The third equation is: -5(0.8y - 2.4) = -y + 14.4. - We can start by distributing the -5 on the left side of the equation.

   -5(0.8y - 2.4) = -y + 14.4
   -4y + 12 = -y + 14.4
   -4y + y = 14.4 - 12
   -3y = 2.4
   y = 2.4 / -3
   y = -0.8
   

Therefore, y = -0.8.

Conclusion

The solutions to the given set of equations are: - x = 3.1 - y = -0.8

If you have any more equations or need further assistance, feel free to ask!