Question

1)2,8х+1,3х=20,5 ; 2)1,7х2,5х-0,6=7,8​

Answer 1

Відповідь:

1)х=5

2)помилка, не вирішується

Покрокове пояснення:

1)4.1х=20.5

4.1х/4.1=20.5/4/1

4.1/4.1=1

x=20.5/4.1

20.5/4.1=5

Answer 2

Ответ:1)х=5; 2)168/85

Пошаговое объяснение:

1)4,1х=20,5

2)4,25х-0,6=7,8

4,25х=7,8+0,6

4,25х=8,4

Answer 3

It looks like you've provided two equations with variables (x) and constants. You want to solve for the value of x in each equation. Let's solve them one by one.

Equation 1:
2.8x + 1.3x = 20.5

Combine the x terms on the left side: 4.1x = 20.5

Now, isolate x by dividing both sides by 4.1: x = 20.5 / 4.1 x = 5

So, the solution for Equation 1 is x = 5.

Equation 2:
1.7x + 2.5x - 0.6 = 7.8

Combine the x terms on the left side: 4.2x - 0.6 = 7.8

Add 0.6 to both sides: 4.2x = 8.4

Now, isolate x by dividing both sides by 4.2: x = 8.4 / 4.2 x = 2

So, the solution for Equation 2 is x = 2.

To recap: Equation 1: x = 5 Equation 2: x = 2