Question

Someone help? pretty sure it is inequalities ​

Answer 1

`(-1,2,-1)`

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)`