2x - 3 = sally's berries
x= jim's berries
2x - 3 + x = 21 } equation
3x - 3 = 22 } simplified
+3 +3
3x = 25
---- ----
3 3
x = 8
21 - 8 = 13
sally picked 13 apples
Answer:
19
Step-by-step explanation
Let the sum of n terms of A.P. = Sn
Take the root of both sides of the equation.
y = ^3 √64
Calculate the root.
y = 4
In the end, when you substitute y for 4,
4^3 will get you 64.