Question

Using the. Cramer. Rule 2x-y=1; 7x-2y=-7

Answer 1

☜☆☞hey friend ☜☆☞

here is your answer ☞
→_→→_→→_→→_→→_→


Given:

2x − y = 1           7x − 2y = −7

Using Crammer's Rule, 

we get

D = ∣2      −17     −2∣ 

=−4 + 7 =  3

D1 = ∣1      −1−7    −2∣

−2 − 7 = −9

D2=∣2        1 7    −7∣

= −14  − 7 = −21

Now,

x=D1/D = −9/3= −3

y=D2/D= −21/3 = −7


∴ x=−3 and y=−7 ______answer


hope it will help you

Devil_king ▄︻̷̿┻̿═━一

Answer 2

Answer:

X = –3 AND Y = –7 IS THE ANSWER (≡^∇^≡)