Solving systems using one substitution

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198