Is 8/9 + 1/10 = 39/90 reasonable or unreasonable

 Hello there!

We have the equation 8/9 + 1/10 = 39/90 and we want to know if this is "reasonable"

Now let's compute the sum:

8/9 + 1/10 here both fractions have different denominators, then we need to find a common denominator, let's try 90.

8/9 = 8/9*(10/10) = 80/90

1/10 = 1/10(9/9) = 9/90

you can do these changes because multiplying by 10/10 or 9/9 is the same as multiplying by 1, then our sum is:

8/9 + 1/10 = 80/90 + 9/90 = 89/90

Then the initial equality is unreasonable, because of 89/90 ≠ 39/90

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step-by-step explanatio89

actually your concept is wrong

step-by-step explanation:

150% of x =300

150x=300×100

x=(300×100)÷150

x=200