Answer:
(d) x equals the quantity negative 5 times y plus 9 end quantity over 4
Step-by-step explanation:
You want to solve for x: 4x +5y = 9.
This can be treated like any other 2-step equation. First isolate the variable term of interest. Then divide by its coefficient.
4x = -5y +9 . . . . . . subtract 5y
x = (-5y +9)/4 . . . . . divide by 4