aaa813
23.09.2019 •
Mathematics
Agroup of hikers carried 36 quarts of water on a day hike.
how many gallons of water did the group carry?
(1 gallon = 4 quarts)
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Ответ:
2(6-3x) + x = 12 - 6x + x = 12 - 5x ;
2(3x) + x = 6x + x = 7x ;
Does: 12 - 5x = 7x ?
Add "5x" to each side of equation:
12 - 5x + 5x = 7x + 5x ;
to get:
12 = 7x + 5x ;
12 = 12x ;
Divide each side of the equation by "12" ;
12 / 12 = 12x / 12 ;
to get: 1 = x ; ↔ x= 1 ;
"When "x = 1" ; "2(6-3x) + x" DOES EQUAL "2(3x) + x" .