Question

Resolva as seguintes equações:

a)x/3=7

b)2x-5=x+1

c)2(x-1)=3x+4

d)x/5+1=2x/3

⚠️faça o cálculo !!!⚠️​

Answer 1

Resposta:

A)x=7

3

3. x = 3. 7

3

x = 3. 7

= 21

B)2x-5=x+1

2x−5+5=x+1+5

2x = x +6

2x - x = x + 6 - x

x = 6

C)2(x-1)=3x+4

2x-2=3x+4

2x-2+2=3x+4+2

2x=3x+6

2x-3x=3x+6-3x

x=-6

d)x+1=2x

5 3

x + 5 = 2x

5 5 3

x + 5 = 2x

5 3

15 ( x + 5) = 15 . 2x

5 3

3 (x + 5) = 5 . 2x

x = 15

7