mjam85877
18.11.2019 •
Mathematics
Stephen was thinking of a number. stephen adds 7.9 to the number, then doubles the result to get an answer of 20. form an equation with x from the information
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Ответ:
Step-by-step explanation:
2(x+7.9)=20
x+7.9=20/2=10
x=10-7.9=2.1
Ответ:
2
Step-by-step explanation:
9*22 = 198
(9*20) + (9*2)
= 180 + 18
= 198