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Given expression: 3/8 + 1/8

Here both 3/8 and 1/8 are fractions and they are being added together.

In order to add or subtract two fractions, we have to make sure that the fractions have the same

denominator.

Both ‘3/8’ and ‘1/8’ have the same denominator ‘8’, hence they can be added directly!

This gives: 3/8+1/8 = (3+ 1)/8= 4/8.

‘4/8’ can be simplified by dividing the top and the bottom by the factor ‘4’==>4/8= 1/2

Therefore, 3/8+ 1/8 = 4/8 = 1/2

Given expression: 17/4 – 5/4

Here both 17/4 and 5/4 are fractions and they are being subtracted together.

In order to add or subtract two fractions, we have to make sure that the fractions have the same

denominator.

Both ‘17/4’ and ‘5/4’ have the same denominator ‘4’, hence they can be subtracted directly!

This gives: 17/4- 5/4 = (17- 5)/4= 12/4.

‘12/4’ can be simplified by dividing the top and the bottom by the factor ‘4’==>12/4=

Therefore,17/4- 5/4 = 12/4 = 3/1.