Respuesta :
X-18 = 2 (X-25)
x-18 = 2x - 50
-18 = x - 50
32 = x
check
32-18 = 14 = 2(32-25) = 2*7
32 is the answer
x-18 = 2x - 50
-18 = x - 50
32 = x
check
32-18 = 14 = 2(32-25) = 2*7
32 is the answer
Answer:
$32
Step-by-step explanation:
Both Lily and Sarh began with the same amount of money, represented by the variable (x).
Lily spends (take a away from her money) $18
L = x - 18
Sara spends (take a away from her money) $25
S = x - 25
Next: Lily as 2 times the amount of money Sara has after they each spend their money.
L = 2S
x - 18 = 2 ( x - 25 )
x - 18 = 2x - 50
(x - 18) + 50 = (2x - 50) + 50
cancels out 50 by adding to each side
x + 32 = 2x
(x + 32) - x = (2x) - x
cancels out x by subtracting from each side
32 = x
CHECK:
L = X - 18
L = 32 - 18 = 14
S = X - 25
S = 32 - 25 = 7
L = 2S
14 = 2 (7)
