2.6667
It is: -3+8n-5 = 8n-8 when simplified
3 + 8n = -58n = -8n = -1
8n-5 = 3
11
11
8n - 15 = 57 (add 15 to both sides)8n - 15 + 15 = 57 + 158n = 72 (divide both sides by 8)8n/8 = 72/8n = 9
3+3 is 6
To do this, you have to cross multiply. (It helps if you write this down on paper as you read). So, 3 over 8 = n (unknown number) over 56. Then you use a trick called cross multiplication. You just multiply the numbers diagonal from each other and your equation equals 3x56=8n. Get it? When you multiply 3 and 56, you get 168=8n. From here, you divide both sides by 8 to get what n equals. 168/8=8n/8. When you divide 168 and 8, you get 21. So, n=21. 3 eighths of 56 equals 21! :)
11
2n x 2n x 2n = 8n^3
-17 = -2n+13-8n Subtract 13 from both sides and bring terms together: -30 = -10n Divide both sides by -10 to find the value of n which will be positive: n = 3
If 8N=32 then N=8And to get that divide 8 from both sides so 8 divided by 8 cancels out so that would be like 8N= 32( * this sign i will use for division) *8 *8 Then you have N = 8