i need help! i need to pass all 6 tests! this is matlab

Solve the following system of three linear equations: - 4x + 3y +z = -18.2 5x + 6y = 2x = -48, 8 2x - 5y +4.5z = 92.5 Use A for the coefficient matrix; B for the boundary condition vector, and X for the unknowns x, y, and z. Script e Res 1 Define a matrix A 2 A-(-4 3 1; 5 6 -2; 2 -5 4.5) 3Define a vector B 4 B=(-18.2; -48.8; 92.5] 5 Type in the code for X 6 X=[x:y:z] 7 Type in the code that assigns the values for x, y, and z from below B gelinsolve(A,B) Previous Assessment: 3 of 6 Tests Passed Test 1 Test 2 Test 3 Test 4 The submission must contain a variable named X. Check if you have declared the variable name x (lower case) Check if you used the correct index in X for X I * Test 5 The submission must contain a variable named y Check if you have declared the variable name y (lower case) Check if you used the correct index in X for y Test 6 The submission must contain a variable named z. Check if you have declared the variable name z (lower case) Check if you used the correct index in X for z