I'm having some trouble completing these problems,I just need clear formulas to correct my own solutions

SECTION 2.2 PROBLEM SET: SYSTEMS OF LINEAR EQUATIONS Solve the following by the Gauss-Jordan Method. Show all work. 1) x + 3y = 1 2) x- y - z =-1 2x - 5y = 13 x - 3y + 2z = 7 2x - y + z = 3 3) x + 2y + 3z = 9 4) x + 2y = 0 3x + 4y + z = 5 y + z = 3 2x - y + 2z = 11 x + 3z = 14SECTION 2.2 PROBLEM SET: SYSTEMS OF LINEAR EQUATIONS Solve the following by the Gauss-Jordan Method. Show all work. 5) Two apples and four bananas cost $2.00 and three apples and five bananas cost $2.70. Find 6) A bowl of corn flakes, a cup of milk, and an the price of each. egg provide 16 grams of protein. A cup of milk and two eggs provide 21 grams of protein. Two bowls of corn flakes with two cups of milk provide 16 grams of protein. How much protein is provided by one unit of food? 7) x + 2y = 10 8) X+w =6 Y+z = 5 2x+ y + w =16 Z+w 3 x - 2z = 0 x +w 5 z tw =5