if 3x-y=7, ax+4y=11 and Dy=26
please ans me fast
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Answer: heya there here is the answer
D =
3
-1
=
(3 × 4) – (1 × - 1)
=
12 + 1
=
13
1
4
Dx =
7
-1
=
(7× 4) – [11× (-1)]
=
28 + 11
=
39
11
4
Dx =
3
7
=
(3×11) – [1× 7]
=
33 - 7
=
26
1
11
By Cramer's Rule
x
=
Dx
=
39
=
3
D
13
y
=
Dy
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