That person is really smart good job
15x-6

21x/2+3. Multiply everything by 2: 30x-12=21x+6. Combine like terms: 9x=18. Get the unknown by itself: 9x/9=X. 18/9=2. X is less than or equal to 2 :)
√180 = √(2 x 2 x 3 x 3 x 5) = 6√5
Answer: 4(5+2) or 4(2+5)
Step-by-step explanation:
8 = 2*2*2
20 = 2*2*5
4(5+2) = 20+8
Answer:
I got this question before I think I had put 6
Step-by-step explanation: