Use back substitution to solve

[frctl]

2x2 + x3 - 2x4 + x5 = 1
2x2 + (1/4 - t/4) - (3t) + x5 = 1

 

[Deleted member 4993]

2x2 + x3 - 2x4 + x5 = 1
2x2 + (1/4 - t/4) - (3t) + x5 = 1

What is x5 doing there? Also check (triple check) your input! There are more mistakes there!!

 

[Otis]

2x2 + x3 - 2x4 + x5 = 1

Hello. You have expressions (in terms of t) for each number shown in blue, above. Be careful, when you make the substitutions. (You did one substitution correctly, in post #21, but the other two need fixing.)

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