The boys have 2 group of 7 and the girls divided in to 3 groups of 7
Answer:

Step-by-step explanation:
Given Equation:

Taking the terms of 'x' to one side and the constants terms to other side.




On solving the equation the value of 'x' is 3
Answer:
the volume of this can only be solve as pedmas or diver prop
Step-by-step explanation:
the two x and four x with 3x+3x+6
2x+8x=30. x= #of pens
10x=30. combine like terms
x=3. divide by 10 to isolate (get by itself) x
2(3)=6. the # of white pens are represented by 2x
6 white pens
hope this helped!