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maks197457 [2]
3 years ago
12

Evaluate

Mathematics
2 answers:
lozanna [386]3 years ago
7 0

Answer: a) 2 b)1  c)1/3 d)5/4

Step-by-step explanation:

Hi to solve this equation we simply have to replace the variable with the number given, and then isolate the variable.

  • 5x, if x= 2/5

5 x 2/5 = 10 /5 = 2

  • 5/x,if x =5

5/5= 1

In this case after replacing the number we have to simplify it.

  • 2y-1, if y =2/3

2 (2/3) -1 =

4 /3 -1 =

4/3 -3/3 = 1/3

In this case, to add fractions first we have to multiply the top and bottom numbers of the second fraction by 3, to have the same denominators.  

  • h+3/4, if h = 1/2

1/2 + 3/4 =

2/4 +3/4 = 5/4

Feel free to ask for more if it´s necessary or if you did not understand something.

SSSSS [86.1K]3 years ago
5 0

5x if x= 2/5 . 5/1x 2/5= 10/5= 2

5/x = 5/5= 1

8/3_ 1 = 8/3- 3/3= 5/3

1/2+ 3/4 = 2/4+3/4= =5/4

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