Question

resolva as equações

a) 7x-8=2x+1
b) 2(3x+1)=8
c) x+1/2+x+2/3=x​

Answer 1

Resposta:

a) 9/5 ou 1.8

b) 1

c)1,16...

Explicação passo-a-passo:

a) 7x-8=2x+1

7x-2x=8+1

5x=9

x=9/5 ou 1.8

b) 2(3x+1)=8

6x+2=8

6x=8-2

6x=6

x=1

c)x+1/2+x+2/3=x

x+0,5+x+0,6...=x

2x-x=0,5+0,6...

x=1,16...

Answer 2

Resposta:

a) 7x-8=2x+1

7x-2x=+1+8

5x=9

x=9/5

x=1.8

b)2(3x+1)=8

6x+2=8

6×=8-6

6x=4

x=6/6

x= 1