Answer: x=5 y=6
Step-by-step explanation: 6y=3× +21
6y-6=2× +20
Opposite sides of the rectangle are equal
Substitute 3x +21 into 6y in the second equation.
If from the negative to the positive side, count how many dots are in between and add together. So it is 6 units apart or 6 dots apart.
The boundary line should be solid because it have a 'great/less than or equal to' sign
we have

<u>Find the greatest common factor GCF</u>
we know that

so
The GCF is equal to 
therefore

<u>the answer is</u>
The number is 