Question

What should be added to 3/8 to get -3/5

Answer 1

Answer:

3/8 + x = -3/5

x = -3/5 -3/8

x =. (-24-15) /40

x =. -39/40

Answer 2

Given :

Sum of the numbers = -3/5

One of the numbers = 3/8

Another number be x

According to the problem,

$\frac{3}{8} + x = \frac{ - 3}{5} \\ \\ x = \frac{ - 3}{5} - \frac{3}{8} \\ \\ x = \frac{ - 3(8) - 3 \times 5}{40} \\ \\ x = \frac{ - 24 - 15}{40} \\ \\ x = \frac{ - 39}{40}$

VERIFICATION :

$\frac{3}{8} + (- \frac{39}{40}) \\ \\ = \frac{3}{8} - \frac{39}{40} \\ \\ = \frac{3(5)}{8(5)} - \frac{39}{40} \\ \\ = \frac{15}{40} - \frac{39}{40} \\ \\ = \frac{15-39}{40} \\ \\ = - \frac{24}{40} \\ \\ = - \frac{24 \div 8}{40 \div 8} \\ \\ = - \frac{3}{5}$

Therefore, -39/40 should be added to 3/8 to get -3/5.