I need help in week_2 programming assignment exercise 5

how to find values of x3 and x2 using previous calculated values. Iām unable to find its solution. Thanks in advance

you can subtract value of (x_4 * its coefficient) in matrix from the value in the solution vector

like in our assignment: x_3 = 7 - (x_4 * 3)

Thank you so much for such a prompt response. It resolved the issue.

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