30/(15-x)+30/(15+x)=9/2
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30/(15-x)+30/(15+x)=9/2
by using trial and error method
put X = 5
then
30 30
---------- + ----------
( 15 - 5 ) ( 15 + 5 )
= 30 30
---- + ----
10 20
Cross multiplication
( 30 × 20 ) + ( 30 × 10 )
-------------------------------
10 × 20
600 + 300
----------------
200
= 900/200 = 9/2
by using trial and error method
put X = 5
then
30 30
---------- + ----------
( 15 - 5 ) ( 15 + 5 )
= 30 30
---- + ----
10 20
Cross multiplication
( 30 × 20 ) + ( 30 × 10 )
-------------------------------
10 × 20
600 + 300
----------------
200
= 900/200 = 9/2
gayathripoornananda:
2x+3y=7 then value pf x will be 2x-7 then x = 2
Answered by
17
hope it help
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