Answered

Get the answers you've been looking for with the help of IDNLearn.com's expert community. Ask your questions and receive comprehensive, trustworthy responses from our dedicated team of experts.

can some one help how to work out this problem
x-y=11
2x+y=19
solve by substitution 

Sagot :

Naǫidn
[tex]x-y=11 \\ 2x+y=19 \\ \\ \hbox{solve the 1st equation for x:} \\ x-y=11 \\ x=11+y \\ \\ \hbox{substitute 11+y for x in the 2nd equation:} \\ 2(11+y)+y=19 \\ 22+2y+y=19 \\ 22+3y=19 \ \ \ |-22 \\ 3y=-3 \ \ \ |\div 3 \\ y=-1 \\ \\ x=11+y=11-1=10 \\ \\ (x,y)=(10,-1)[/tex]
Your engagement is important to us. Keep sharing your knowledge and experiences. Let's create a learning environment that is both enjoyable and beneficial. Find clear answers at IDNLearn.com. Thanks for stopping by, and come back for more reliable solutions.