Eliminate p terms
times 2nd equation by -1
q-2p=-5
add to 2nd equation
q-2p=-5
<u>7q+2p=29 +</u>
8q+0p=24
8q=24
divide both sides by 8
q=3
sub back
2p-q=5
2p-3=5
add 3
2p=8
divide by 2
p=4
p=4
q=3
Answer:
$00.90
Step-by-step explanation:
If you dive the total cost of the case, $37.20, by the total number of pencils, 40, that's the answer you get.
2x-y=8...(1)
x+y=7....(2)
from (2)
y=7-x....(3)
put (3) into (1)
2x-(7-x)=8
2x-7+x=8
2x+x=8+7
3x=15
x=5.....(4)
put (4) into (2)
x+y=7
5+y=7
y=7-5
y=2
Hope it helps c:
U follow the order of operations method first the exponent since there is no parentheses 2^2 = 4 and then multiply 2 * 4 = 8 and finally add 4 + 8 = 12
so ur answer is 12
