Please help! Solve the system of equations.

{−x+y=13x−y=5
What is the x-coordinate?

Enter your numeric answer only.

What is 20+(5 x 2/5 )+ 3 show your work

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?