Bt758
04.04.2020 •
Mathematics
What is 3=7(4 - 2u)-6u
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Ответ:
Step-by-step explanation:
Step 1: Distribute on the right side
Step 2: Combine like terms
Step 3: Subtract 28 from both sides
Step 4: Divide both sides by -20
Ответ:
u = 5/4
Step-by-step explanation:
to evaluate for the value of u we would simply open the bracket and then evaluate for the value of u by collecting the like terms together.
solution
3=7(4 - 2u)-6u
3 = 28- 14u - 6u
collect the like terms
3 + 14u + 6u = 28
20u = 28 - 3
20u = 25
divide both sides by the coefficient of u which is 20
20u/20 = 25/20
u = 5/4
Ответ:
If there are 180 students taking band and 60 students in both band and chorus, then 180-60=120 students are taking only band.
Now:
120 students are taking band;60 students are taking both band and chorus;190 students in total.Then 190-(120+60)=190-180=10 students are taking only chorus.
correct choice is C.