Ask Question
13 September, 16:28

Show your work

20.5=15.5 + (-3.6x) + 1.8x

A. - 20

B. - 2.7

C. 6.6

D. 20

+3
Answers (1)
  1. 13 September, 18:49
    0
    Ok this is the same as 20.5 = 15.5 - 3.6x + 1.8x so first of all you add or subtract what u can on both sides in this case subract 3.6 and 1.8 because they both have a variable and 15.5 doesnt. (Since your subtracting you HAVE to line your decimals up the ONLY way you dont line your decimals up is with multiplication and division is another story.) it will look something like this

    3.6

    -1.8=

    -1.8

    Its negative because u have more negatives than positives.

    now your equation will look like this

    20.5 = 15.5 - 1.8x

    you bring the 15.5 to the other side so you subtract 12.5 into 20.5 look like this

    20.5

    -15.5=

    5.0

    you subtract because you are moving the 15.5 to the other side. and the answer is positive because there are more positives than negatives. So now the problem will look like this:

    5.0=-1.8x

    then you divide - 1.8 on both sides to icilate your x you could use a cacultor. to get the anwser of x = - 2.7
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Show your work 20.5=15.5 + (-3.6x) + 1.8x A. - 20 B. - 2.7 C. 6.6 D. 20 ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers