ChanceJ
28.08.2019 •
Mathematics
Urgent -3x+2y-z=8: -3x+4y+5z=-14: x-3y+4z=-14
solve using elimination method
x=
y=
z=
Solved
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Ответ:
Step-by-step explanation: you need to first try to get that down to 2 equations with 2 variables then you can plug in and find all the variables
Ответ:
boat rent: $40/per person
Life preserver: $5/per person
Step-by-step explanation:
120 ÷ 3 = 40
135 ÷ 3 = 45
45 - 40 = 5