Answer:
90 g of water should be added and he will make 900 g of solution.
Step-by-step explanation:
Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,
810+x - 100%,
x - 10%.
Mathematically,

So 90 g of water should be added and he will make 810+90=900 g of solution.
angle A = 30
(2x-9) = (2x+21)
+9 +9
2x=2x+30
-2x -2x
=30
3/4t=14
t=56/3
hope this helps!
For this case we must find the value of the variable "x" of the following equation:

So, we follow the steps:
Subtracting 3 from both sides of the equation we have:

Different signs are subtracted and the sign of the major is placed:

Thus, the value of x is 9.
Answer:
