Answer:
adding +2 on both sides to remove the -2 then it would be 2=0
Step-by-step explanation:
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.
Answer:
Step-by-step explanation:
Solution is given below in attachment
740% written as a decimal is 7.4 as a mixed number it would be 7 4/10 or simplified it would be 7 2/5