Question

3x-4y=10,4x+3y=5 by cramer rule

Answer 1

Answer:     here is your answer

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let,3x-4y = 10 ----------> {1}

4x+3y = 5 ------------> {2}

{1} × 3 = 9x - 12y = 30

{2} ×4 = 16x + 12y = 20

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= 25x = 50x

= 50/25x = 2

therefore , x = 2

now place x in eq.

1(3×2) - 4y = 10

6 - 4y = 10

-4y = 4y = (-1)

so ,x = 2

y = (-1)

i hope it helped uh !!

Step-by-step explanation:

Answer 2

3x-4y=10 (i)

4x+3y=5 (ii)

Multiplying (I) by 3 and (ii) by 4 and

Multiplying (I) by 3 and (ii) by 4 andadding both eq.

We get,

9x -12y = 30

16x+12y = 20

__________

25x = 50

=> x = 50/25 = 2

Putting the value of x in eq.(I)

3x2 -4y =10

=> -4y = 10-6

=>. y. = 4/4

=>. y. = 1

Hence,

x=2

y=1