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siniylev [52]
3 years ago
9

Write a system of equations and solve

Mathematics
1 answer:
Semenov [28]3 years ago
3 0
c+b=7
5c+45b=195

c+b=7 --> c=7-b
5c+45b=195

5(7-b)+45b=195
35-5b+45b=195
35+40b=195
40b=160
b=4

c+(4)=7
c=3

cars:3 \\ 
buses:4
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