Question

1)(6+1.1/15х)*2,5=30 2)18,4у-12.3/10у=2 3)(10-2у)-2,1=1/4 4)5.3/5х-2,3х=0,108

Answer 1

1)24
2)36
3)3568
4)8934

Answer 2

I can help you solve these equations. Here are the detailed steps:

1) (6+1.1/15x)*2.5=30

We can start by simplifying the expression inside the parentheses:

(6+1.1/15x)*2.5=30 (6+0.0733x)*2.5=30

Next, we can distribute the 2.5 to both terms inside the parentheses:

15+0.1833x=30

Then, we can subtract 15 from both sides to isolate x:

0.1833x=15 x=15/0.1833 x=81.8

So, the solution is x=81.8.

2) 18.4y-12.3/10y=2

We can multiply both sides by 10y to clear the fraction:

184y^2-12.3=20y

Then, we can rearrange the terms to form a quadratic equation:

184y^2-20y-12.3=0

Next, we can use the quadratic formula to find the roots of the equation:

y=(-b±√(b^2-4ac))/(2a) y=(-(-20)±√((-20)^2-4(184)(-12.3)))/(2(184)) y=(20±√(14752.8))/368 y=(20±121.46)/368

So, the solutions are y=0.38 or y=-0.28.

3) (10-2y)-2.1=1/4

We can start by adding 2.1 to both sides:

10-2y=2.35

Then, we can subtract 10 from both sides:

-2y=-7.65

Finally, we can divide both sides by -2:

y=3.825

So, the solution is y=3.825.

4) 5.3/5x-2.3x=0.108

We can multiply both sides by 5x to clear the fraction:

5.3-11.5x=0.54x

Then, we can add 11.5x to both sides:

5.3=12.04x

Finally, we can divide both sides by 12.04:

x=0.44

So, the solution is x=0.44.

I hope this helps you understand how to solve these equations. If you need more help, you can use some online calculators that can show you the steps and the answers. For example, you can try [this one](https://www.kontrolnaya-rabota.ru/s/equal-one/), [this one](https://ru.symbolab.com/solver/roots-calculator), or [this one](https://ru.onlinemschool.com/math/assistance/fraction/fraction_calc/).