10)

11)

12)

13) (your answer is incorrect)

14) (your answer is incorrect)

15)

16)
-expression to represent this situation

Answer: In 1 group 57 students
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P.S. Hello from Russia :^)
Answer:
x= 2
Step-by-step explanation:
so expand the left side of the equation
9x+9= 25+x
and then group like terms( subtract 9 from both sides and also do same with x.
9x-x= 25-9
8x= 16
divide by 8 on both sides.
x=2
Answer:
- 
Step-by-step explanation:
Given
-
← divide numerator/ denominator by 14 )
= - 
90 miles driving at 45 mph for 2 hours
Answer:
5/12
Step-by-step explanation:
12 pieces of cake is the original amount and 5 kids ate it 5 pieces that means 5/12 of the cake it gone.