Question

the sum of two rational number is 3/2if one of the numbers is 9/10 find the other number​

Answer 1

let other number be= x

-9/10+x = 3/2

x = 3/2+9/10

x = (15+9)/10

x = 24/10

x = 2.4

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Answer 2

$\huge{\it{\boxed{Given:-}}}$

$Sum\;of\;2\;rational\;numbers\;= \frac{3}{2} \\ \\ One\;number\,=\,\frac{9}{10} \\ \\ Let\;the\;other\;number\,be\;x.\,Then, \\ \\ \frac{9}{10}\,+\,x\,=\, \frac{3}{2} \\ \\ x\,=\, \frac{3}{2} \,-\, \frac{9}{10} (LCM\;of\;2\;and\;10\,=\,10) \\ \\ x\,=\,\frac{15}{10}\,-\, \frac{9}{10} \\ \\ x\,=\, \frac{15\,-9}{10} \\ \\x\,=\, \frac{6}{10}\;\\ \\ Therefore,\;x\,=\; \frac{3}{5}(By\;Cancellation)$

$\bf{\boxed{Hope\;it\;will\;help\;you.}}$