Let
x--------> the number of blue beads
y--------> the number of red beads
we know that

-------> equation 
------> equation 
equate equation
and equation 

find the value of x

therefore
the answer is
Ivan has

Answer:
3 + 3 + 1
Step-by-step explanation:
The doubles is 3+3 which is 6 plus 1 is 7
Answer:
$1.95 for one can of peanuts.
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
subtract 3 from each side