Several methods of solving linear equations of several unknowns are described in Hindu literature, dating from about 200CE onwards. In particular, Brahmagupta's

Several methods of solving linear equations of several unknowns are described in Hindu literature, dating from about 200CE onwards. In particular, Brahmagupta's method seems very similar to Gaussian elimination[1]. And then there are solutions to quadratics, cubics and biquadratics, pell's equations, etc. 1. https://archive.org/details/history-of-hindu-mathematics-2-bibhutibhushan-datta-avadesh-narayan-singh/page/42/mode/2up https://archive.org/details/history-of-hindu-mathematics-2-b...