Question

resolva x+1=7 5=x+3. -7=x-11. 12=20-x. 3x=-9. -4x=20. 18x=24. -30x=10 x/6=14

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Answer 1

x+1=7

x= 7 - 1

x= 6

5=x+3

5 - 3 = x

2 = x ou x= 2

-7=x-11

- 7 + 11 = x

4=x

12=20-x

12 - 20 = - x

- 8 = - x (-1)

8= x

3x=-9

x= - 9/3

x= - 3

-4x=20

x= 20/-4

x= - 5

18x=24

x= 24/18 (÷6)

x= 4/3

-30x=10 (-1)

30x = - 10

x= - 10/30 (÷10)

x= - 1/3

x/6=14

x= 14 • 6

x= 84