Question

Resolvaas equações do 1° grau:

A)2.X+50=60
B)3.X-7=20
C)6.X=-X+25
D)5.X-4=4.X+46

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Answer 1

Resposta:

a) 2x + 50 = 60

2x = 60 - 50

2x = 10

x = 10/2

x = 5

b) 3x - 7 = 20

3x = 20 + 7

3x = 27

x = 27/3

x = 9

c) 6x = - x + 25

6x + x = 25

7x = 25

x = 25/7

d) 5x - 4 = 4x + 46

5x - 4x = 46 + 4

x = 50

Answer 2

a) 2x+50=60

2x = 60-50

2x = 10

x= 10÷2

x= 5

b) 3x -7= 20

3x= 20+7

3x = 27

x= 27÷ 3

x= 9

c) 6x = -x + 25

6x + x = 25

7x = 25

x= 25÷7

d) 5x -4 = 4x +46

5x -4x = 46 + 4

x = 50