If 45 cookies serve 15 students how many cookies will serve 30 students

using ratios

90 cookies would be served to 30 students.

Step-by-step explanation:

First, simplify the first ratio given to us.

45/15 = 3/1

Every student is given 3 cookies. You are now serving 30 students. To solve, multiply 3 with 30.

3 x 30 = 90

90 cookies would be served to 30 students.

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fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

first one because it can't have a fraction in it

step-by-step explanation: