3х +7y = 2
— 3х - 2y = 8

(x,y)=(-4,2)

Step-by-step explanation:

{3х +7y = 2

{— 3х - 2y = 8

solve the equation for 3x

{3х = 2 -7y

{— 3х - 2y = 8

substitute the given value of 3x into the equation

-3x -2y=8

-(2-7y)-2y=8

solve the equation of y

y=2

substitute the given value of y into the equation

-3x -2x2=8

solve the equation for x

x=-4

the possible solution for the system is the ordered pair

(x,y)=(-4,2)

Check the given ordered pair is the solution of the system of equations

{3х (-4) + 7x2=2

{- 3х (-4) -2x2=8

simply the equalities

{2=2

{8=8

Sin e all the equalities are true ,the ordered pair is the solution of the system

(x,y)=(-4,2)

solution

(x,y)=(-4,2)

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.