Question

3) Resolva as equações:
a)x + 5 = 8 d)6x = 2x + 16
b) a - 4 = 3 e) 2x - 5 = x +1
c) 3y = 15 f) 5x + 7 = 4x +10

Answer 1

Resposta:

a)

x+5 = 8

x = 3

b)

a-4 = 3

a = 7

c)

3y = 15

y = 5

d)

6x = 2x +16

6x - 2x = 16

4x = 16

x = 4

e)

2x - 5 = x + 1

2x - x= 1+5

3x = 6

x = 2

f)

5x+7 = 4x+10

5x-4x = 10-7

x = 3