ladybee05
20.09.2020 •
Mathematics
Three fourths of the difference of a number and 7 is negative filteen. What is the number?
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Ответ:
The number is 27
Step-by-step explanation:
let the number be x
3/4 ( 7-x)=-15
21/4 - 3/4x=-15
collect like terms
-3/4x=-15-21/4
-3/4x=-81/4
divide both sides by -3/4
x=27
Ответ:
Im remember i had the same problem. 3 days. He is clearing 1/3 of an acre per day.