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sherifour
21.09.2019 •
Mathematics
Hint: omars equation doesn't work!
identify his error and correct it by showing the steps omar should have taken and determine the correct value of x.
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Ответ:
He should have added the two expressions to get 180
(10x-1) + (59) = 180
10x+(-1+59) = 180
10x+58 = 180
10x+58-58 = 180-58
10x = 122
10x/10 = 122/10
x = 12.2
Ответ:
20x < 100
subtract 20 from both sides
20 - 20 = 0
100 - 20 = 80
x < 80