If a / b = 7 / 9 then find the value of :-
3a + 5b / 3a - 5b
7b - 2a / 7b + 2a
Answers
Answered by
1
first.. we put the value... in which a=7and b=9
(i) 3×7+5×9/3×7-5×9
=21+45/21-45
=66/-24
=33/-8 (Answer)
(ii) 7×9-2×7/7×9+2×7
=63-14/63+14
=49/77
=7/11
Attachments:
Similar questions