Answer:
X= 27/4, 6 3/4, 6.75
x+142 =3x+64
subtract x from each side
142 = 2x+64
subtract 64 from each side
142-64 = 2x
78=2x
divide by 2
78/2 = x
x=39
The number is 39
The expression would be 13^2 + 6^3
if it needs to be simplified further just plug that into a calculator
Answer:
Last part 24x
Step-by-step explanation:
I understand some of this, like the last question. if each class had 24 pupil, and were trying to find out how many are in each class, it would be 24x (x stands for the amount of classes)
You have not given a true amount of pupils so I can not give a 100% correct answer for the first part.
Answer:
16:12:13
Step-by-step explanation:
A C T
32 24 <u> </u><u>2</u><u>6</u><u> </u>
÷2
16 12 13
34+24= 58
84-58= 26