Question

Alguém me ajuda? Pfvr..

A) 4×+1=25

B) 5×+3=18

C) 4×+5=33

D) 7×+1=29

E) 10×+20=30

F) 10×+50=100

G) 10×-30=70
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Answer 1

A) 4x+1=25, 4x=25-1, x=24÷4, x=6

B) 5x+3=18, 5x=18-3, x=15÷5, x=3

C) 4x+5=33, 4x=33-5, x=28÷4, x=12

D) 7x+1=29, 7x=29-1, x=28÷7, x= 4

E) 10x+20=30, 10x=30-20, x=10÷10, x=1

F) 10x+50=100, 10x=100-50, x=50÷10, x=5

G) 10x-30=70, 10x=70+30, x=100÷10, x=10

Answer 2

Resposta:

A) 4×+1=25

    4x = 25 -1

    4x = 24

      x = 24/4

      x = 6

B) 5×+3=18

    5x = 18 - 3

    5x = 15

      x = 15/5

      x = 3

C) 4×+5=33

    4x = 33 -5

    4x = 28

      x = 28/4

      x = 7

D) 7×+1=29

    7x = 29 -1

    7x = 28

      x = 28/7

      x = 4

E) 10×+20=30

   10x = 30 - 20

   10x = 10

       x = 10/10

       x = 1

F) 10×+50=100

   10x = 100 - 50

   10x = 50

       x = 50/10

       x = 5

G) 10×-30=70

    10x = 70 +30

    10x = 100

        x = 100/10

        x = 10

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