Question

1. Resolva as equações do 1° Grau:

a) 2x - 6 = 0

b) 2(x + 3) - 4 = 10

c) 3(2x - 5) = 3x + 15

d) 3x + 4 = 22

e) 100x + 50 = 250

f) 2x + 1 = 5

g) 12x + 4 = 3x + 31

h) 7a + 3 = 2a - 27

i) 12x + 11 = 2/3 + 2/6​

Answer 1

Resposta:

a) 2x-6=0

2x=6

x=3

b) 2(x+3) - 4=10

2(x+3)=14

x+3=7

x=4

c) 3(2x-5)=3x+15

6x-15=3x+15

3x=30

x=10

d) 3x+4=22

3x=18

x=6

e) 100x+50=250

100x=200

x=2

f) 2x+1=5

2x=4

x=2

g) 12x+4=3x+31

9x=27

x=3

h) 7a+3=2a-27

5a=-30

a=-6

i) 12x+11=2/3 +2/6

12x+11= 1

12x=10

x=5/6