The numbers are 7 and 3.
7 + 3 = 10
7 x 3 = 21
It is easier to factor 21 than to find the addends of 10.
1, 3, 7, 21 - are factors of 21
1, 2, 3, 4, 5, 6, 7, 8, 9 - are addends of 10. Which is more numbers to consider than the factors of 21.
Answer:
b=-1
Step-by-step explanation:
7b-2/5=6b-7/5
7b+1=6b
-b=1
b=-1
Answer:
28 is 10% of 280
Steps to solve "28 is 10 percent of what number?"
We have, 10% × x = 28
or,
10
100
× x = 28
Multiplying both sides by 100 and dividing both sides by 10,
we have x = 28 ×
100
10
x = 280
If you are using a calculator, simply enter 28×100÷10, which will give you the answer.
