Which of the following is the value of m?
a. 18.5
b. 14.5
c. 29

The answer is 14.5 because :

2 times 2?5 = 5 so the denominator must have the same done, so 7.5 x 2.5 is 17.5. Subtract 3 from 7.5 and you get 14 .5 . So, m+ 14.5

Hello!!
So here we just need to solve for m.

2/7=5/(m+3)

First multiply both sides by 7 to move the 7 from the LHS to the RHS so now we have

2=35/m+3 now let’s multiply both sides by m+3 to get rid of fractions and get a linear relationship. So we now have

2m+6=35 do now subtracting 6 from both sides we have

2m=29 and last step!! Divide by 2 in both sides and we get m alone! So now we have

m= 29/2= 18.5

Any questions please feel free to ask