To add seven tenths to a number, multiply the number by 1.7. For example, 50 plus seven tenths of 50 is equal to 50 x (1 + (7/10)) = 50 x 1.7 = 85.
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They add up to 19/20
Add the tenths together to get 13/10... This gives you 1 and 3/10... Now - add in the whole numbers from the original sum, and you get 4 and 3./10
Multiply two fifths by two to get a common denominator. Then you will have 4 tenths plus three tenths. then add straight across and you will get seven tenths.
seven and eight tenths. you have to change one half to five tenths and then add the whole numbers and then the fraction
seven tenths