Question

resolva as equaçoes [preciso das contas]
x-5=8

3x+6=12

2=7y-5

5c+2=3-9

Answer 1

x - 5 = 8
x = 8 + 5
x = 13

3x + 6 = 12
3x = 12 - 6
3x = 6
x = 6/3
x = 2

2 = 7y - 5
2 + 5 = 7y
7 = 7y
7y = 7
y = 7/7
y = 1

5c + 2 = 3 - 9
5c + 2 = - 6
5c = - 6 - 2
5c = - 8
c = - 8
       5