three fifths plus one quarter = 17 twentieths
one and one tenth
Three fourths plus one eight is 1 whole
2.15 or 2 and three twentieths
six and eleven twentieths
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.