Solve the three variable system. (i was just introduced to these) x - y = 2 3x + z = 11 y - 2z = -3 the answer to this is (3, 1, 2) which makes sense, but i’ve been trying over and over to use substitution or elimination and i just don’t know the steps to get there.

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.