Question

Resolva as equações do 1° grau.

8) 4x = 16

9) 2x - 15 = 3

10) 9x = 81

11) 7x- 12 = x

12) 5x = 625/5

13) 6x - 10 = 2

14) 4x + 12 = 4

15) 10x = 1000

alguém ajudaaa

Answer 1

Resposta:

8) 4x = 16. x=16-4 x=12

9) 2x - 15 = 3. 2x=3+15. x=18/2. ×=9

10) 9x = 81. x=81/9. x=9

11) 7x- 12 = x. 7x -1x=12. 6x=12. x=12/6 x=2

12) 5x = 625/5. ×=25/5. ×=5

13) 6x - 10 = 2. 6×=2+10. ×=12/6. ×=2

14) 4x + 12 = 4. 4×=4-12. ×=-8/4. ×=-2

15) 10x = 1000. ×=1000/10. ×=100