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teddylove2643
30.01.2020 •
Mathematics
The sum of fifteen and six times a number t is 81
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Ответ:
Ответ:
in math
"of" means times (x)
"is" means equals (=)
"sum" means you're going to add
The sum (we are going to add) of 15 and six times a number t (15 + 6t) is 81 (= 81). So write it out...
15 + 6t = 81
Now solve for t. First subtract 15 from each side...
15 + 6t - 15 = 81 - 15
6t = 66
Now divide each side by 6 to get t by itself...
6t/6 = 66/6
t = 11
Done!
Ответ:
y = 1/3x
Step-by-step explanation: