Answer:
y = -2
x = 5
Step-by-step explanation:
3x - y = 17
-x + y = -7
here we can find the sum of the two equations
2x = 10
x = 5
now we can just plug in the value of x to find y
-(5) + y = -7
y = -2
Answer:
i guess for this it would go like:-
total distance covered by the driver in four days(d)= 900km
distance covered by him in first day(d1) = 223 km
distance covered by him on second day(d2) =188km
distance covered by him on third day(d3)= 309 km
now,
distance covered on fourth day (d4)= 900-223-188-309
= 180 km
Step-by-step explanation:
here, the total distance is given i.e 900 km. similarly the distance covered by the driver on the consecutive days are also giver. so here we subract the distance covered by the driver in all the three days from the total distance it covers. it would gibe us the distance covered by him on the fourth day. since, it is the the left out distance that the driver has to cover.
hope it helps..
Jim bought x iphones for seven coupons each and sold y android phones for 4 coupons each. He got 20 coupons.
Julia bought the same number iphones for 3 coupons each and bought the same number Android phones for 4 coupons each. She got 20 coupons too. Please find quantity of iphones they will get and quantity of Android phones sold by Jim and got by Julia
{7x-4y=20
+
{3x+4y=20
10x=40
x=4
28-4y=20
4y=8
y=2
Answer
x=4; y=2
Jim and Julia bought 8 iphones and Jim sold 2 Android phones. Julia bought 2 Android phones.
No, because unless they have the same number of digits this cannot be done.
Example:
82 and 32 Obviously 82 is greater
But 84 and 324 in this case 324 is greater
