Can anyone explain to me how to solve systems of equations with three variables? especially for this problem

x-3z=7

2x+y-2z=11

-x-2y+2z=6

The spending habit that will lead too the worst financial situation is to?

Julie is opening a savings account at a bank that offers new clients 0.1% interest compounded quarterly. She deposits $1,700 when she opens the account.

Solve for s. 2 - 28 = 8 + 13 S =

What is 11 x 11 and a way to remember it

The price of an item selling at 150% of its $63 value is

Zach has 53 flowers to plant. he wants to plant them in groups of 10s and 1. zach can plant 10 flowers in each flower box. He can plant 1 flower in each pot. How many different ways can zach plant flowers in boxes and pots

Jesse measures the water level from the top of a dock twice a day. The water level in the morning is 3 feet. The water level in the afternoon is 7.5 feet. Which statement about the relationship between the two measurements is true?

Charlotte has been working for her company for x years. Travis has been working for the same company exactly 3 years longer than Charlotte. What is the range of the relationship? A - y>0 B - y>3 C. y<3 D. 0

Without actually calculating, how much greater is the product 98*50 than the product of 97*50? Explain

What is the probability that a package is prepared between 9 a. m. and 3 p. m.?