Step-by-step explanation:
if a+3=5 then
5-3=a
a=2
I think for the first one you do 8 times 9 and then 5 times 5 and add them together, I’m not sure though because I learned that a few years ago
Answer:3 and 4
Step-by-step explanation:
25/7 as a mixed number:
First you see how many 7s go into 25. This is 3.
Then you use the remainder as the fraction over 7, so it's 3 4/7 (3 and four sevenths)
Answer:
The numbers are in the ratio 5:7
Let their common multiple be 'x'
The numbers are 5x, 7x
If 3 is subtracted from each of them the ratio becomes 2:3
5x-3/7x-3 = 2/3
3(5x-3) = 2(7x-3) (cross multiplication)
15x -9 = 14x -6
15x-14x = -6+9
x=+3
Therefore the numbers are 5* 3 =15, 7*3 = 21
(Verifications when 3 is subtracted from each other ,the ratio is 2/3, 15–3/21–3 = 12/18 = 2/3 ) verified)
The numbers are 15 & 21.
Step-by-step explanation:
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