-3x + 7y = -16 . . . (1)
-9x + 5y = 16 . . . .(2)
(1) x 3 => -9x + 21y = -48 . . . (3)
(2) - (3) => -16y = 64 . . . (4)
Required equivalent system of equations is
-9x + 5y = 16
-16y = 64
Answer:

Step-by-step explanation:
let me know if this is right please :(
Irrational numbers are nonrepeating decimals like 0.1257486...
sqrt(150) is irrational gives nonrepeating decimal
12^2 = 144
sqrt(625) = 25
sqrt(49) .. sqrt(50) .. sqrt(64)
7 .. sqrt(50) .. 8
in between 7 and 8