Question

calcule as equações

a ) 5×+6×-16=3×+2×-4

b) 3(×-2)=4(3-×)

c)×/5+×/2=7/10​

Answer 1

Resposta:

2, 18/7 e 1

Explicação passo-a-passo:

5x + 6x - 16 = 3x + 2x - 4

5x + 6x -3x-2x = 16 - 4

6x = 12

3x = 6

x = 6/3

x = 2

3(x-2) = 4(3-x)

3x -6 = 12 - 4x

3x + 4x = 12 + 6

7x = 18

x = 18/7

x/5 + x/2 = 7/10

2x + 5x = 7

7x = 7

x= 1

Answer 2

Olá....

a )

5x + 6x - 16 = 3x + 2x - 4

11x - 16 = 5x - 4

11x - 5x = - 4 + 16

6x = 12

x = 12/6

x = 2

b)

3(x - 2) = 4(3 - x)

3x - 6 = 12 - 4x

3x + 4x = 12 + 6

7x = 18

x = 18/7

c)

x/5 + x/2 = 7/10⇒mmc de 5, 2, 10

2x + 5x = 7

7x = 7

x = 7/7

x = 1

Bons estudos.

​