Question

solve the pairs of linear equations : 8/a -9/b = 1, 10/a + 6/b =7​

Answer 1

Answer:

This is your answer hope this will help you.

Step-by-step explanation:

You can take out the value of (b) by putting the value of (a) in equation1.

Please mark as brainlist answer.

Answer 2

Answer:

begin mathsize 12px style 3 over straight x plus 2 over straight y equals 10 space space space space space space space space space.... left parenthesis straight i right parenthesis

9 over straight x minus 7 over straight y equals 10.5 space space space space space.... left parenthesis ii right parenthesis

Multiplying space equation space left parenthesis straight i right parenthesis space by space 3 comma space we space get

9 over straight x plus 6 over straight y equals 30 space space space space space space space space.... left parenthesis iii right parenthesis

Subtracting space left parenthesis ii right parenthesis space from space left parenthesis iii right parenthesis comma space we space get

13 over straight y equals 19.5

rightwards double arrow straight y equals fraction numerator 13 over denominator 19.5 end fraction equals 2 over 3

From space left parenthesis straight i right parenthesis comma

3 over straight x plus fraction numerator 2 cross times 3 over denominator 2 end fraction equals 10

rightwards double arrow 3 over straight x plus 3 equals 10

rightwards double arrow 3 over straight x equals 7

rightwards double arrow straight x equals 3 over 7 end style