Answer:
D. 
Step-by-step explanation:
First, move the variable (+ 2y) to the left-hand side and change its sign.

Then, move the constant (+ 7) to the right-hand side and change its sign.

Then, collect the like terms (y - 2y)

Finally, add the numbers (3 + 7). That will get you your final answer.

Answer:
yes your math seems about right but wait for someone else to respond also because im not completely sure
Step-by-step explanation:
If the mean of the data set is 32.6. Then the number of pages he read in 5 days is 163.
<h3>What is Mean?</h3>
Mean is simply defined as the average of the given set of numbers. The mean is considered as one of the measures of central tendencies in statistics. The mean is said to be an arithmetic mean. It is the ratio of the sum of the observation to the total number of observations.
Han recorded the number of pages that he read each day for five days.
If the mean of the data set is 32.6 pages. Then the total number of the pages he read till now, will be
Let the total number of the pages be x. Then we have

More about the mean link is given below.
brainly.com/question/521501
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Hello!
3 x - 40^0 = 2 x - 10^0
3 x - 1 = 2 x - 1
3 x = 2x
3 x - 2 x = 0
Hence, the answer is 0
I hope this helps, and have a nice day!