Hello.
Fractions can be added and subtracted only if they are like fractions.
Example:
We can subtract these fractions because they are like fractions (they have the same denominator)
Another Example:
We can add these fractions because they are like fractions.
Therefore, the answer is "like"
I hope it helps.
Have a nice day.
supplementary angles = 180 degrees
180 = 8+x
subtract 8 from each side
172 =x
Answer: 170 degrees
No because the red train will arrive 2 mins before the blue train and the blue train will arrive 2 mins before the yellow train
A₆ =12
a₇ = ?? = x
a₈ 27
In this case x is the geometric mean & as per the formula
geometric mean of 2 numbers =√(a₆ * a₈) = √(12*27)
& x=18.
Proof:
Find the common ratio between a₇ & a₆ ==> = ( x) / 12
now find the common ration between a₈ & a₇ ===> =27 / (x)
x/12 = 27/x ===> x² = 12*27 ==> x² = 324 & x =√324 = 18