Question

③ resolva as
questões
a)x-6=10
b)x+5=15
c)2x + 3 =15
d)7x-1=13
e)3. (x-4)-1=-25​

Answer 1

a) x - 6 = 10
x = 10 + 6
x = 16

b) x + 5 = 15
x = 15 - 5
x = 10

c) 2x + 3 = 15
2x = 15 - 3
2x = 12
x = 12/ 2
x = 6

d) 7x - 1 = 13
7x = 13 + 1
7x = 14
x = 14/ 7
x = 2

e) 3 (x - 4) - 1 = -25
3x - 12 - 1 = -25
3x - 13 = -25
3x = -25 + 13
3x = -12
x = -12/ 3
x = -4