Question

Equações de 1 Grau:
a) 3x - 10 + 13= -2 x + 28
b) 20 x - 30 = 40+ 30 - 20
c) 10 x- 20 = 40 + 50
d) 20 - 80 + 2x = 10
e) 19 + 2 x - 13 = 10 - 20
f) 10 x - 12 + 10 = + 18 - 20

Answer 1

a) 3x+2x=28+10-13
    5x=25
    x=25/5
    x=5
b)20x=40+30-20+30
  20x=80
x=80/20
x=4
c)10x=40+50+20
10x=110
x=110/10
x=11
d)2x=10+20-80
2x=-50
x=-50/2
x=-25
e)2x=10-20-19+13
2x=4
x=4/2
x=2
f)10x=18-20+12-10
10x=-10
x=-10/10
x=-1

Answer 2

Resposta:

a) 3x+2x=28+10-13

   5x=25

   x=25/5

   x=5

b)20x=40+30-20+30

 20x=80

x=80/20

x=4

c)10x=40+50+20

10x=110

x=110/10

x=11

d)2x=10+20-80

2x=-50

x=-50/2

x=-25

e)2x=10-20-19+13

2x=4

x=4/2

x=2

f)10x=18-20+12-10

10x=-10

x=-10/10

x=-1

Explicação passo-a-passo: