1.

Solve for x and y linear equation in two variables​

Answer»

Answer:

I am giving answer of first question

answer of this question and goes like this

Step-by-step explanation:

let 1/y be a

then equation is

4x + 6a = 15. (1)

6x - 8 a = 14. (2)

now by elimination method

multiply 6 in equation 1 and 4 in equation 2

Now the equation become

24X. + 36a = 90. (3)

24x. -. 32a = 56. (4)

subtract equation 3 and 4

after subtracting equation become

68a = 34

a = 34/ 68

a = 1/ 2. (5)

put 5 equation in 1 equation

4x + 6 x 1/2 = 15

4x + 3 = 15

x = (15 - 3) / 4

x = 3

now

1 / y = a

1/ y=1/2

y = 2. ,. x = 3. this is answer

like this you can do other questions

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