The answer to the sixth question on page 55 of the fifth grade math classroom exercise book.

The equation is wrong, it should be 85X- 10=65*(X+2). Because car B is10km ahead of car A, and car A is two hours ahead of time, the distance from car B minus the extra10km is exactly equal to the distance traveled by car A..

Is it possible to solve this equation?

85X- 10=65*(X+2)

85 X-65X= 130+ 10

20X= 140

X=7

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