Answer:
x=3, z=-1, y=6
Step-by-step explanation:
you need to make the coefficients of each variable equal to each other then subtract 2 equations.
this one: multiply -4 in 1st
4x+4y+4z=32
-4x+4y+5z=7
_____________
8x+0-z=25
we have 2 equations with 2 variables now
2x+2z=4
8x-z=25
Answer:
My best friend is! I'll tell her! (She plays Ro blox)
Step-by-step explanation:
Answer:
Cost of Trumpets: $174
Cost of Clarinets: $149
Cost of Violins: $89
Step-by-step explanation:
Got it correct
Answer:
"There are 30 chairs in 5 rows. How many chairs are in each row?" Would be the correct story problem.
Answer:
$5.60
Step-by-step explanation:
multiply $2.80 by 2
