Question

if 7a+3b:4a+9b+9:7 then the value of A+b/a is -----. Ans. A. 53/60 B. 73/70 C.73/60 D.53/70 E None of these

Answer 1

Answer:

OPTION C

Step-by-step explanation:

7a+3b:4a+9b+9:7 (wrong)

7a+3b:4a+9b= 9:7 (it should be like this)

7a + 3b                  

-----------        =      9/7

4a + 9b

49a + 21b = 36a + 81b

49a -36a = 81b -21b

13a = 60b

b/a = 13/60

a = 60

then a + b/a ( wrong becoz 60 + 13/60= 3613/60)

(a + b)/a (right)

(60+13)/60 = 73/60

option C

complete answer with solving all the errors

A BRAINLIEST MARK SHOULD BE THERE

Answer 2

STEP -BY STEP

EXPLANATION

ANSWER C IS CORRECT ANSWER