Question

a rational number is such that when you multiply it by 5/2 and add 2/3 tovthe product you get -7/12. what is the number

Answer 1

x = rational number
$\frac52x+\frac23=\frac{-7}{12}\\\frac52x=\frac{-7}{12}-\frac23=\frac{-7-8}{12}=\frac{-5}{4}\\x=\frac{-5}{4}\times\frac25=-0.5$
Answer:
x=0.5