Mister Exam
9x−14y=−3; 2x−ay=−6
The solution
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9*x - 14*y = -3
$$9 x - 14 y = -3$$
2*x - a*y = -6
$$- a y + 2 x = -6$$
-a*y + 2*x = -6
Rapid solution
$$a_{1} = \frac{4 \left(7 y + 12\right)}{9 y}$$
=
$$\frac{4 \left(7 y + 12\right)}{9 y}$$
=
$$x_{1} = \frac{14 y - 3}{9}$$
=
$$\frac{14 y}{9} - \frac{1}{3}$$
=
=
$$\frac{4 \left(7 y + 12\right)}{9 y}$$
=
0.444444444444444*(12 + 7*y)/y
$$x_{1} = \frac{14 y - 3}{9}$$
=
$$\frac{14 y}{9} - \frac{1}{3}$$
=
-0.333333333333333 + 1.55555555555556*y