PLZ HELPPP its due in 10 minutes ;-; Solve this system of equations using either the elimination method or substitution method, explain what method u used and how u solved it
2x + y = 25

x + y = 20

we have tow equation here

2x+y=25

and

x+y=20

so if we multiply the second equation with- and add it to the first equation we will find the x

x=5

and the we will fin the why by writing the value of the x in the equation you want

y=15

x=5  y=15

Step-by-step explanation:

Solving by Elimination:

Multiply the bottom equation (x+y=20) by -1 to solve for x

Subtract -x-y=-20 from 2x+y=25 to get x=5

Now that you have solved for x, plug 5 back into the equation 2x+y=25 and solve for y

(2)(5)+y=25

10+y=25

-10    -10

y=15

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: