Answer:
Step-by-step explanation:
3.1x10 = 31, and 9x10=90, so the fraction is 31/90, whcih equals 3.44444444 . . .
Answer:

Step-by-step explanation:
You can use these Cramer's formulas to solve for x and y:

where

So,

Answer:
x:0,1
y:0,5
Step-by-step explanation: