There is no graph doe ...
To subtract fractions, find the LCD and then combine.
Exact form:
22/3
Yes on day 7, they both have 46 dollars
X = y + 3
2x + y = 9
Solution..
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Substitute for x=y+3 in the second equation...
2x+y = 9
2(y+3)+y=9
2y+6+y=9
3y+6=9
3y=9-6
3y=3
y=3/3
y=1....
Substitute for y=1 in the first equation...
x=y+3
x = 1+3
x=4..
Am sure the answer is quite evident now...