2⅜ + 13/20=

what's the answer?

121/40

Step-by-step explanation:

Expanding the 2⅜ to become 19/8 (as 8*2 = 16+3= 19)

Then, changing the denominators to be equal (smallest common denominator) which would be 40.

19/8 would have to be multiplied by 5 on the top and bottom to reach 40.

19/8* 5/5 = 95/40

Then, 13/20 has to have a denominator of 40 as well. Multiplying the top and bottom by 2:

13/20 * 2/2 = 26/40

95/40 + 26/40 = 121/40

121/40 is the most simplified version.

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this