(PLEASE HELP ME) Solve the system of linear equation using substitution method. SHOW YOUR SOLUTION AND THE CHECKING
1.) x+3y =11
2x+y =7
2.) x+y =9
5x+4y =47

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality