Question

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Answer 1

Resposta:

1. x = 8 y = 3        6. x = 4 y = 2  

2. x = 6 y = 1        7. x = 7 y = 4

3. x= 5 y = 1         8. x = 12 y = -8

4. x = 5 y = 10      9. x = -5 y = -2    

5. x = 15 y = -5     10. x = 1 y = -2

Explicação passo-a-passo:

1. x = 5 + y   5 + y + y = 11     y=3 x=8

2. x = 5 + y   5+y+y=7  y=1 x=6

3. x=4+y  4+y+y=6  y=1 x=5

4. x=15-y 2(15-y) -y=0 30-3y=0 y=10 x=5

5. x=10-y 10-y-y=20 -2y=10 y=-5 x=15

6. x=-2+y  -2+y+y=6  y=2  x=4

7. x=3+y 3+y+y=11 y=4 x=7

8. x=20+y 20+y+y=4 y=-8 x=12

9. x=-3+y -3+y+y=-7 y=-2 x=-5

10. x=-3-2y  -3-2y-3y=7 y=-2 x=1