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Va roggg frumosss urgenttttt d au 11 punctee​

Va Roggg Frumosss Urgenttttt D Au 11 Punctee class=

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Mirena30

Răspuns:

a) y+3+y=1, 2y=-2, y=-1,x=2

b) x-3+x=5, 2x=8, x=4, y=-1

c) 2(2y-1)+3y=12, 4y-2+3y=12, 7y=14 ,y=2, x=3

d) 5x-4(3x+2)=-1, 5x-12x-8=-1, -7x=7 ,x=-1, y=-1

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