Question

6. Find the value of a such that:
(i) 7/11 =21/a
(ii) 5/6 =a/18
(iii) a/-11 =9/33
(iv) 8/13 =a/39​

Answer 1

PROVIDED:

1). 7/11 =21/a

2). 5/6 =a/18

3). a/-11 =9/33

4). 8/13 =a/39

SOLUTIONS:-

1). $\frac{7}{11}$ = $\frac{21}{a}$

$\huge{\bold\blue{⇝}}$ $\frac{7 \times 3}{11 \times 3}$ = $\frac{21}{33}$

2). $\frac{5}{6}$ = $\frac{a}{18}$

$\huge{\bold\blue{⇝}}$ $\frac{5 \times 3}{6 \times 3}$ = $\frac{15}{18}$