.hello :
<span>2d−e=7....(1)
d+e=5.....(2)
(1)+(2) : 3d=12
d=4
subsct in (2) :
4+e=5
e=1
conclusion :
</span><span>The solution is (4, 1).</span><span>
</span>
Answer:
Associative propertry of addition.
Step-by-step explanation:
The associative property of addition states that:

It states that we can add numbers regardless of the groups. The sum does not change irrespective of how the addends are grouped.
We are given the expression:

It can be written as:

It can also be written as:

Whatever maybe the arrangement of r, h and t, their sum will always be equal. We can regroup them in many ways but the sum remains the same.
Answer:
769/70
Step-by-step explanation:
5 2/7 = 37/7
5 7/10 = 57/10
The lowest common multiple is 70
37*10/(7 * 10) = 370/70
57/10 = 57*7/(7*10) = 399/70
Now add
370/70 + 399/70
769/70
Is 769 prime? I think it might be.
Yes it is.
Answer:
-4.85714285714
Step-by-step explanation: