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vekshin1
3 years ago
9

Can someone help me please

Mathematics
1 answer:
IgorLugansk [536]3 years ago
7 0
A) 4(25-3y)+5y=9
    100-7y=9
     91=7y
     y=13
    (-14,13)

b) 14-x=x-10
     2x=24
     x=12
     (12,14)

c) 4x=12
    (3,7)

d) 18.5x+10.4y=200
     x+y=130

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