tckryoung
18.12.2019 •
Mathematics
Which is the solution set of a for -3(-x + a) + 7 < 5 when x = -1?
a) a > - 1/3
b) a < - 1/3
c) a > 5/3
d) a < 5/3
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Ответ:
C
Step-by-step explanation:
-3 (-1+a)+7 <5
3-3a+7 <5
-3a+10 <5 (collect like terms )
-3a <-10+5
-3a <-5(divide both side by -3)
-3a/-3 <-5/-3
a>5/3
Ответ: