jandi12 jandi12

23-11-2020
Mathematics

contestada

-9 (c + 7) = -13c +7
What value of c makes the equation true? Enter the answer in the box.

Respuesta :

thithaonguyen thithaonguyen

23-11-2020

Answer:

c=17,5

Step-by-step explanation:

-9(c+7) = -13c+7

<=> -9c - 63 = -13c+7

<=> -9c + 13c = 7+63

<=> 4c = 70

<=> c = 70/4 = 35/2 = 17,5

CHECK THE ANSWER:

-9(c+7) = -13c+7

-9(17,5+7) = -13×17,5+7

-220,5 = -220,5

Hope it's help u:))

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