(x+2/5)7=63/10
then divide both sides by 7
x+2/5=63/70
subtract 2/5 from both sides
and x= 1/2
*x=original number
Answer:
4 sets of 25
Step-by-step explanation:
100/25 = 4
Not sure what you are asking in the end.
Irrational due to the negative sign
She practiced 630 hours in all because you multiply 18x35
