Question

como resolver?

9+4x=25

-9x+2=47

-7x-1=55


2y-4+2


5y-9+86

33-7y=68

14-9y=76

Answer 1

9 + 4x = 25
4x = 25 - 9
4x = 16
x = 16 / 4
x = 4

- 9x + 2 = 47
- 9x = 47 - 2
- 9x = 45
x = 45 / - 9
x = - 5

- 7x - 1 = 55
- 7x = 55 + 1
- 7x = 56
x = 56 / - 7
x = - 8

2y - 4 = 2
2y = 2 + 4
2y = 6
y = 6 / 2
y = 3

5y - 9 = 86
5y = 86 + 9
5y = 95
y = 95 / 5
y = 19

33 - 7y = 68
- 7y = 68 - 33
- 7y = 35
y = 35 / - 7
y = - 5

14 - 9y = 76
- 9y = 76 - 14
- 9y = 62