Question

ei ma ajutati
Rezolvati in RxR prin metoda substituiei sistemulde ecuatii:
a)$\left \{ {{7x-3y=13} \atop {x-2y=5}}$
b)$\left \{ {{2x-3y-1} \atop {x+y=2}} \right.$
c)$\left \{ {x-2y=0} \atop {4x+5y=26}} \right.$
d)$\left \{ {{x+4y+2=0} \atop {2x-4y+1=0}} \right.$
e)$\left \{ {{2x+y=12} \atop {7x-2y=31}} \right.$
f)$\left \{ {{x-y=1} \atop {2x+y=5}} \right.$
g)$\left \{ {x+2y=5} \atop {3x-6y=9}} \right.$
h)$\left \{ {{8y-x=4} \atop {2x-21y=2}} \right.$

Answer 1

ti-am pus 2 fisiere
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