Hi! This type of equation is actully really simple to solve once you learn how so I'll only do a few and let you solve the rest.
To solve 3x + 6 = 18 you just need to remember that whatever action you do on one side of the equal sign you have to do on the other as well, and you just need to get the variable isolated on one side and the constant on the other.
So subtract 6 from both of the constants (6 and 18) to get to 3x = 12.
Then divide both sides by 3 to isolate x and you get x = 4.
To solve x/7 -9 = -7 you have to add 9 to both sides to get x/7 = 2. Then because it's a fraction with a denominator of 7 you multiply both sides by 7 to get x = 14.
To solve 8x - 2x = -36 you combine like terms to get 6x = -36 then divide both sides by 6 to get x = -6.
Hope this is what you were looking for and explained in an understandable way, if not I apologize. :)
7. 56
8. 68
9. 5.5 and 22
10. 8.35
11. 88
12. 4.93
Answer:
C. 5x - 3 ≤ 60.
Step-by-step explanation:
'No more than 60' is equivalent to less than or equal to 60 ( ≤ 60).
Answer:
No. of Bacteria in a petri dish= 10
No. of hours= 14
Total no. of Bacteria= 10x14= 140
Answer _140______
Step-by-step explanation:
How this was helpful
if the brainliest option is there can you mark me
Ok so.
First- 2x times -x=-2x^2
Outer- 2x times 15=30x
Inner- -27 times -x=27x
Last- -27 times 15= -405
So now -2x^2 +30x+27x-405
Simplify down to get -2x^2 +57x-405
