Question

If K/5+3/7-1/2=51/70 then K=________​

Answer 1

Answer:

$k = 4$

Step-by-step explanation:

$\frac{k}{5} + \frac{3}{7} - \frac{1}{2} = \frac{51}{70} \\ \\ \frac{14k + 30 - 35}{70} = \frac{51}{70} \\ \\ 14k - 5 = 51 \\ \\ 14k = 51 + 5 \\ \\ 14k = 56 \\ \\ k = \frac{56}{14} \\ \\ = 4$

Answer 2

Answer:

k/5+3/7-1/2=51/70

980k-350=3570

980k= 3570-350

980k=3920

k=4