Answer:
Infinite
Step-by-step explanation:
3x+15=2x+10+x+5
grouping
3x+15=3x+15
If you have a equation where both sides are the exactly the same, the solutions are infinite. This is written as: x€ℝ
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First if each stack has 10 cds and there is 5 stacks you do 10 X 5= 50. then you add two more stacks of 10 ( 2 stacks of 10=20) and add 20 to 50 which is 70
Answer: 17 pages
Step-by-step explanation:well you would have to divide 544 by 9 to see hao many pages you would need for the blue book
544/9= 60.44 which would be 61
then you would have to divide 544 by 7 to see hao many pages you would need for the red book
544/7= 77.71 which would be 78
the you would subtract 78 by 61 to see how many more pages you would need