Multiplication of two matrices can be accomplished if this condition exists.
I think there is a .5 percent chance i added all numbers and divided by 6[the blue marbles]
Answer:
2/7x +3=9
x=21
Step-by-step explanation:
Let the unknown be x.
Take 3 to the other side so: 2/7 multiplied by x= 6
Divide 6 by 2/7 to get the answer;
Therefore x=21
Sub back into equation to check answer.