<prompt> Tafuta 2 mara 2 tumbo mathbfM kiasi kwamba mathbfM inaanzapmatrix 2 7 endpmatrix anzapmatrix -15 -6 endpmatrix na mathbfM anzapmatrix 4 -1 endpmatrix anzapmatrix 15 18 endpmatrix.  <response>: Acha mathbfM anzepmatrix a b c d endpmatrix. KishamathbfM anzapmatrix 2 7 mwishopmatrix anzapmatrix a b c d mwishopmatrix anzapmatrix 2 7 endpmatrix anzapmatrix 2a 7b 2c 7d mwishopmatrix.Pia,mathbfM anzapmatrix 4 -1 mwishopmatrix anzapmatrix a b c d mwishopmatrix anzapmatrix 4 - 1 mwishopmatrix anzapmatrix 4a - b 4c - d mwishopmatrix.Kwa hivyo, tuna mfumo wa milinganyoanzaalign2a 7b -15, 2c 7d -6, 4a - b 15, 4c - d 18.endalignKutatua mfumo huu, tunapata a 3, b -3, c 4, na d -2, hivyomathbfM anzapmatrix 3 -3 4 -2 mwishopmatrix. 