The answer of the question is A
Answer:
3x+4x=7x
Step-by-step explanation:
basically 3x+4x means 3*x+4*x
thus, we can take x out as a common factor of both
x(3+4)= x*7=7x
or
you can sum the variables with the same element (x is our element in here)
thus,
3x+4x=7x
if it would be 3x+4y you cannot sum them since the elements are different (x and y)
Answer:
75
Step-by-step explanation:
Answer:
3 weeks. 5+10=15
because in 2 weeks he will have 30 dollars plus the 5 dollars he already has is 35 dollars but, that is not enough he needs one more week.