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Vesnalui [34]
3 years ago
5

HW Help -

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
8 0
<span>6(−3−x)−2x=14 
x= -4

14=2c-6+3c
c= 4

</span><span>−7.5(x−3)=3.75
</span><span>x= 2.5 

</span><span>3/5(r−7)=1
</span>r= 26/3

3.5 (t+6)=7 
D) -4 


Hope this helps ^.^
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Answer: 3 kids take 3 pieces of candy each

Step-by-step explanation:

Let the number of children that took 3 pieces is x ( total take 3*x pieces of candy)

Number of children that took 5 pieces is y ( total take 5*y pieces of candy)

1 child took 1 piece that actually means that x+y=18 and 3*x+5*y=84.

( Because total number of all kids is 19. We just deduct one kid (Let his name is John) who took only 1 candy.  So we have 19-1 =18 kids without John. The similar is with the candies. Total number is 85. We deduct 1 piece which John has taken. )

So we have 2 equations or the system of 2 equations:

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We have   3*x+3*y=18*3

Deduct 3*y from both sides of this equation

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3*x=54-3*y

Substitute 3*x in equation  2).  by 54-3*y

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2*y=30

y=15  ( kids take 5 pieces of candy each)

Using equation 1) find x

x+15=18

x=3 (kids take 3 pieces of candy each)

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