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svlad2 [7]
3 years ago
13

X + 7y = "70" 3x − 6y = −33 step by step

Mathematics
1 answer:
Aneli [31]3 years ago
3 0

Answer:

x=7

y=9

Step-by-step explanation:

x+7y=70   ...(1)

3x-6y=-33

divide by 3

x-2y=-11   ...(2)

(1)-(2) gives

x+7y-x+2y=70+11

9y=81

y=9

x-2*9=-11

or x=-11+18=7

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