Question

Add the following rational numbers: 5/8 and 3/-10​

Answer 1

Answer:

13/40

Step-by-step explanation:

5/8 + ( 3/-10 )

= first make the denominators same

so, Lcm of 8 and - 10 = 5 * 2* 2* 2 = 40

so now 5/8 * 5/5 = 25/40  ( if we multiply with 5 in the denominator then we need to multiply it with the numerator also )

3/-10 = 3/-10 * -4/-4 = -12/40

now 25/40 + (-12/40 )

= 25 / 40 - 12/40

13/40

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