Question 1123116
x + y = 36
1180x + 125y = 23490
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1180x + 125y = 23490
-
1180x + 1180y = 42480
0x + -1055y = -18990 
= -1055y = -18990
y = -18990/-1055
y = 18 The store sold 18 external hard drives and:
x = 36-18 = 18 computers
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Check:
(18*1180) + (18*125) = 23490 Correct