Question

Encontre o valor de X A) x+8=3 B)5x-4=6 C)7x + 10=3x-5 D) 9(X+1)=7(X-3)

Answer 1

Olá...

A)

x + 8= 3

x= 3 - 8

x= - 5

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B)

5x - 4= 6

5x= 6 + 4

5x= 10

x= 10/5

x= 2

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C)

7x + 10= 3x - 5

7x - 3x= - 5 - 10

4x= - 15

x= - 15/4

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D)

9(x + 1)= 7(x - 3)

9x + 9= 7x - 21

9x - 7x= - 21 - 9

2x= - 30

x= - 30/2

x= - 15