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Eight and three fourths plus six and two fifths is fifteen and one twentieth.

three fifths plus one quarter = 17 twentieths

1 7/20

one and one tenth

-33/20

2.15 or 2 and three twentieths

six and eleven twentieths

seven

First we need to convert them into like terms. Three fifths is twelve twentieths. Three fourths is fifteen twentieths. Together that is twenty-seven twentieths. That is one and seven twentieths or 1.35 in decimal.

No.

No, two fifths is smaller the three fourths. It would only be 8/20ths while three fourths would be 15/20ths.

It is nine twentieths.

It is: 9 and 3/5 plus 7 and 3/4 = 347/20 or 17.35

three tenths.

9/20

20

pi

Three and three fourths plus three is six and three fourths.

0.9083333

8/15

No.

25

9/20 or 0.45

three fifths, for example.

1.75 + 1.75 = 3.5 One and three fourths plus one and three fourths is three and a half.