Solve the system of equations
x+y+z=3
2x+5y+2z=3
-x+9y-3z=21

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

47 - 90 = 43

43 - 180 = x

x = 137

5

step-by-step explanation:

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant