thakidd4567
07.10.2019 •
Mathematics
Richard makes 8 quarter-pound hamburgers on the grill. how many pounds of hamburger meat does he use?
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Ответ:
-28=7(x-7)
First expand the terms on the right side
That is
-28 = 7x - 49
Group like terms
7x = -28 + 49
7x = 21
Divide both sides by 7
7x/7 = 21 /7
x = 3
Hope this helps