Question

1,5x-0?78x=1,8 3,6y+2,8y=22,4

Answer 1

Ответ:

1,5x - 0,78x = 1,8

0,72x = 1,8

x = 1,8 : 0,72

x = 2,5

 

3,6y + 2,8y = 22,4

6,4y = 22,4

y = 22,4 : 6,4

y = 3,5

Answer 2

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

1. 1.5x - 0.78x = 1.8

Combine like terms:

0.72x = 1.8

Now, isolate x by dividing both sides of the equation by 0.72:

x = 1.8 / 0.72 x = 2.5

So, the solution for the first equation is x = 2.5.

2. 3.6y + 2.8y = 22.4

Combine like terms:

6.4y = 22.4

Now, isolate y by dividing both sides of the equation by 6.4:

y = 22.4 / 6.4 y = 3.5

So, the solution for the second equation is y = 3.5.

To summarize:

x = 2.5 y = 3.5