2x + 6y = 12
2x - 2x + 6y = 12 - 2x
6y = 12 - 2x
6y/6 = 12/6 - 2x/6
Y = 2 - 2/6 X
Y = 2 - 1/3 X or
Y = -1/3 X + 2.
Answer:
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Step-by-step explanation:
can you plz tell me what this is is it a multiplt??
Answer:
number of $20 bill = 4
Number of $5 bill = 5
Step-by-step explanation:
Given that:
Total number of $5 and $20 bills = 9
Let :
Number of $5 bills = x
Number of $20 bills = y
Combined worth of all bills = $105
x + y = 9 - - - (1)
5x + 20y = 105 - - - (2)
From (1)
x = 9 - y
Substitute x = 9 - y into (2)
5(9 - y) + 20y = 105
45 - 5y + 20y = 105
15y = 105 - 45
15y = 60
y = 60/15
y = 4
x = 9 - y
x = 9 - 4 = 5
Hence,
number of $20 bill = 4
Number of $5 bill = 5
