sonyav732

14.12.2020 • 

Mathematics

Eudora ran from her home to her secret laboratory at an average speed of 12 km/h 12 km/h12, start text, space, k, m, slash, h, end text. She then took one of her jetpacks and flew to her school at an average speed of 76 km/h 76 km/h76, start text, space, k, m, slash, h, end text. Eudora traveled a total distance of 120 120120 kilometers, and the entire trip took 2 22 hours. How long did Eudora spend running, and how long did she spend flying using her jetpack?

Ответ:

octavioC2

12.04.2021

Mathematics

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−10x + 1 + 7x = 37

-10x+7x+1=37

-3x+1= 37

Move +1 to the other side. Sign changes from +1 to -1.

-3x+1-1= 37-1

-3x=36

Divide by -3.

-3x/3= 36/-3

x= -12

Answer : x= -12

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