Question

tell me fast please ​

Answer 1

Answer:

3/10

Step-by-step explanation:

please mark as brainliest.

Answer 2

Answer:

The answer is -13/70

Step-by-step explanation:

$\frac{5}{7} + ( \frac{ - 9}{10} )$

$\frac{5}{7} - \frac{9}{10} \: \: \: because \: (- \times +) = -$

Take LCM

The LCM of 7 and 10 is 70 so,

$\frac{5 \times 10}{7 \times 10} - \frac{9 \times 7}{10 \times 7}$

$\frac{50}{70} - \frac{63}{70}$

$\frac{ - 13}{70}$