October 2020 0 58 Report
Escontre o conjunto solução dos sistemas de equações . A) -x+4y=9
2x-4y=-6

B) 13=3a+b
-5=b-3a

C) -6m+n=-5
6m-7n=5

D)16r+2s=-10
-16r+s=1

E) 6y-4x=1
4x+2y=1

F) 9x+2y=3
6x-2y=7
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