Question

2/5d + -3/10=9/10
Please help:( need this Asapp!!

Answer 1

d = 3

Explanation:

`(2)/(5)` d -
`(3)/(10)` =
`(9)/(10)` [ note + - = - ]

multiply through by 10 ( the LCM of 5 and 10 ) to clear the fractions

4d - 3 = 9 ( add 3 to both sides )

4d = 12 ( divide both sides by 4 )

d = 3