How do i know which is not a composite number

29

Step-by-step explanation:

To find what isn't a composite number, we need to find which of these is prime. 27 isn't since its 9*3. 28 isn't since its 14*2. 29 is prime

no, the equation would be invalid since they are both not equal.

step-by-step explanation:

here you got

4y-6+4y 2-9

first, you would simplify the equation on the form.

4y-6+4y 2-9

then, move all the terms that contains a y to the left and all the other terms to the right.

+4y-4y+-9-6

finally, you will simplify the left and the right side of the equation.

y=-3

6 on both sides and twelve on the top and the bottom

step-by-step explanation: