Question

write the values of Dx and D for the equations 2x + 3y = 4; 7x - 5y = 2

Answer 1

Answer:

Dx=-26 and D=-31

Step-by-step explanation:

The given equations are 2x+3y=4 and 7x-5y=2, using the crammer's rule,

D=determinant$\left[\begin{array}{ccc}2&3\\7&-5\\\end{array}\right]$

D=-10-21

D=-31

And, Dx= determinant$\left[\begin{array}{ccc}4&3\\2&-5\\\end{array}\right]$

Dx= -20-6=-26.

Hence, Dx=-26 and D=-31

Answer 2

Answer:

DX= -26 & D= -31

Step-by-step explanation:

like and comment