I don't need to know anything about all that rounding stuff.
You said that there are 3 digits, they are all the same, and their sum is 15.
So each of them must be ( 15 / 3 ) = 5 .
The number is <em>555</em> .
Let's say the larger number is x. that means that the smaller number is x - 3. since you know their sum is x + x - 3, and that is equal to 14. so you have the equation x + x - 3 = 14. combine like terms (x) to get 2x - 3 = 14. add three to both sides to get 2x = 17. divide both sides by two to get x = 17/2. so the larger number is 17/2, and the larger number is 11/2 (17/2 - 3 = 11/2)
5x - 6 = 29
Add 6 to both sides
5x = 25
Divide both sides by 5
x = 5
Answer:
3x+6 is inverse of 3x-6.it is a additive inverse and if we add both we get 0.
A) 65%
b) 68
26:40 as x:100
26/40 = x/100
Cross multiply
2600 = 40x
x = 65
———————
85% of 80
0.85 is the decimal equivalent of 85%
80 x 0.85 = 68
