x - 2y + 3z = a
2x + y + z = 4
-3x + 2y - 2z = -10
Additional test cases were added along with an improved solution-checking assertion.
Find out missing number from a vector of 9 elements
Deleting an element in a matrix
Your favourite city!
Calculate some equation
Find the Sum of the Series:
Find the sum of the negative elements under the main diagonal.
Numerate input arguments
Solve the following boundary value problem
Return ! if array element starts with a certain letter. Otherwise return ?
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