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:
X= -3/2
Step-by-step explanation:
6x/6=-9/6
Answer:
Z
Step-by-step explanation:
the answer is z! x should increase by 2 every time y increases by 1
Answer:
Step-by-step explanation:
30 ≤ 23 + x
7 ≤ x
the answer for x is 1 because 1/3 should be multiplied by x and x is one