Question

resolva as equações.
a)7×-1=13
b)6×=2×+28
c)5×-2=18+3×
d)6x-10=2×+14
e)-×-2×-4=11
f)12×-4=10×+3​

Answer 1

Resposta:

a) 7x – 1 = 13

7x = 13 + 1

7x = 14

x = 14/7

x = 2

b) 6x = 2x + 28

6x – 2x = 28

4x = 28

x = 28/4

x = 7

c) 5x – 2 = 18 + 3x

5x – 3x = 18 + 2

2x = 20

x = 20/2

x = 10

d) 6x – 10 = 2x + 14

6x – 2x = 14 + 10

4x = 24

x = 24/4

x = 6

e) –x – 2x – 4 = 11

–3x = 11 + 4

–3x = 15

3x = –15

x = –15/3

x = –5

f) 12x – 4 = 10x + 3

12x – 10x = 3 + 4

2x = 7

x = 7/2

x = 3,5