MathAlgebraLinear algebraSystems of linear equations

Solving systems of linear equations by substitution method

Theory

Sum of the solutions

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Given the following system

{2t+3s=86t+10s=−4\begin{cases} 2t + 3s = 8\\ 6t + 10s = -4 \end{cases}find the sum of its roots t+st + s.

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