rezolve sistemele: 3x + 7y =5 [3x+2y=5 [4x-2y=10 4x+3y=1 1 2 3 4 5x-2y=-19 5.x-3y=2 2x+3y=1 [5x+4y=2 2x+y=1 2x + 3y =1 2x-3y=7 [2x+4y =5 5 6 7 8 3x+2y=-1 x+2y=-1 4x-4y=4 4x+6y=7 4x-3y=20 2(x+3)-3y=2 3(x+4)+ y =3 2(x-3)+y-4=-3 9 10 11 12 5x + 2y +2 5x-3(2y-1)=-4 x+2(y+5)=2 x-6+3(5+ y) =5 5(x+2-3=y 3.x + 2y =3 (3x+2)-2y=2 [3(2x-3)+3(5+ y) =15 13 14 15 16 x+2(2y+1)=5 [2(x+7)- y =2 3x+4(7- y) =10 5(4x-3)-2(y+3)=3 3(x + y)- 2y=1 19 Il Să se rezolve sistemele: 5(2x+1)-3(y+2)=3 5(x+4)-y=1 17 18 4(x+y)-3(3x+2y)=-9 3(x+2)-2(y-5)=-1 20 (4(3x+2) 2 =3(3y+4) 5(4x+3)=4(2y+3)- 1 5(x-2y)-3(2x - y =11 21 3(2x+4y)-2(x-2y)=-20 [2(2x 1)-3(y+1)=-3 2(x+y+5)-3(x-y-2) 13 23 24 2(x+1)-2(3y-5)=4 3(2x+y+4)+2(3x+2y+5)=-9 x+2[4x5(y+1]=-2 3[4x 3(x+1)]+8+2(y-x) 26 27 28 3[2y+4(x-1)]=-17 5[2x-4(x+1)]+24+6(x- y) 3x 2[2x 3(y+1)]=17 - 4y 3[4y 5(x-1)]=-16 III Să se rezolve sistemele: (5(2x+y)-4x=-15 [2(2x-4)+3(y+6)=10 22 3(5 x) 2(y+1)=12 √√2x+ √3y=0 25 3√3x-5√√2 38 x+y, 3x+2y 1 + =8. 29 5(x+1)+7=3(y-5)+y+3 (x+yx-y)=(x+1)-(-2) 3x-2y x-y 2 2 2 30 31 3 3x+y x+2y 3x+y+5 2x-y+10 2 2x+3y-3 4x + y +6 == 3 2 5 2 2x-3y+5 =3 2 3 3 32 33 2x+3 1 3y-2 3 2. 5 2 2 5 5 3x-4y+10 4 = 3x-2y+4 6 5x-2y+9 5 3x + y 4x+y + 5 2 34 2x+y x+2y + =x+y-1 2 5 35 3 x-5 4 6 (2x-3y+1)=4x-y- 20 +1 2x 3y+5 3x-2y+4 2x + y x+2y 3 1 36 =x--v+ 5° 3 5 6 5 2 2 37 3x-4y+10 5x-2y+9 2x-y x-2y 1 = 4 5 + 4 6​