Question

Someone help? pretty sure it is inequalities ​

Answer 1

Answer:

$(-1,2,-1)$

Step-by-step explanation:

we already know that c= -1

we can substitute in 4b + c =7

$4b+(-1)=7\\\\4b-1=7\\\\4b=7+1\\\\4b=8\\\\b=2$

we can substitute in a + b -5c = 6

$a+(2)-5(-1)=6\\\\a+2+5=6\\\\a+7=6\\\\a=6-7\\\\a=-1$

so it is

$(-1,2,-1)$