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Mariana [72]
3 years ago
15

1) 4x + 2x + 3x = 2)4(7x + 5y) = Can you please help me??

Mathematics
1 answer:
kobusy [5.1K]3 years ago
5 0
1)4x + 2x + 3x 
   6x + 3x
       9x

2)4(7x + 5x)={4 x 7x + (5y x 4)}
             28x + 20x
                  48x

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3 years ago
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konstantin123 [22]

Answer:

B) 4x-5-3x=x+5 has no solution.

Step-by-step explanation:

A) 4x+4=4-4x

4x-(-4x)+4=4

4x+4x+4=4

8x+4=4

8x=4-4

8x=0

x=0/8

x=0

------------------

B) 4x-5-3x=x+5

4x-3x-5=x+5

x-5=x+5

x-x-5=5

-5=5

no solution.

------------------------

C) 4x+15-9x=5x+15

4x-9x+15=5x+15

-5x+15=5x+15

-5x-5x+15=15

-10x+15=15

-10x=15-15

-10x=0

x=0/-10

x=0

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D) 4x+2-x=4+3x-2

3x+2=3x+4-2

3x+2=3x+2

infinitely many solutions.

8 0
2 years ago
If 2/9 of the students in a school are in 6th grade, then how
sveticcg [70]

Answer:

231

Step-by-step explanation:

\frac{2}{9} =\frac{42}{x}

42÷2= 21

9×21= 189

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42 6th graders

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Hello!

Answer:

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Step-by-step explanation:

Hope this helps have a wonderful day! :3

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Answer:

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Step-by-step explanation:

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