Question

what rational number should be subtracted from -23/5 to get -7/2.​

Answer 1

Answer:

let the rational no. be x

-23/5 -x =-7/2

x = -7/2+23/5

lcm of 2 and 5 = 10

x= -7×5/2×5 + 23×2/5×2

x= -35/10 + 46/10

x= -35+46/10

x= 11/10

Answer 2

Answer:

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Step-by-step explanation:

$\frac{ - 23}{5} - {?} = \frac{ - 7}{2} \\ {?} = \frac{ - 23}{5} - \frac{ - 7}{2} \\ {?} = \frac{ - 46 + 45}{10} \\ {?} = \frac{ - 1}{10} \\ \\ \frac{ - 23}{ 5} - \frac{ - 7}{2} = \frac{ - 1}{10}$