Answer:
Step-by-step explanation:
90 times 3 = 270
9x-3 + 6x + 48 = 270
add like terms, 48-3 = 45
9x + 6x + 45 = 270
subtract 45 both sides and add like terms again
15x = 225
divide 15 on both sides
x = 15
It has a solution, but it isn't a positive number, it's a negative one (which you probably didn't get to jet at school, so teacher said it hasn't got a solution)
8X + 19 = 11
move every normal number without X to one side (remember, when moving number across sides, change its sign)
8X = 11 - 19
now
8X = -8
and you get X that is a negative
X = -8/8
X = -1
Answer:
-15
Step-by-step explanation:
-3+-2*5-2=-15
2+2 is 4 you can do it on a calculator buddy :)
Answer:
Biased Sample
Step-by-step explanation: