Question

a rational numberis is such that when you muntliply it by 5/2 and add by 2/3 you get - 7/2 when is the number

Answer 1

given equation
$x(5 \div 2) + (2 \div 3) = - 7 \div 2$
solving for x we get the rational number = -17/15

Answer 2

let he number be x
5/2x =+2/3x=-7/2
(15+4)/6x= -7/2
19/6x= -7/2
therefore, x=-7/2 * 6/19
                 x=-(21/19)