elenora96
elenora96 elenora96
  • 16-01-2021
  • Mathematics
contestada

if 3(x-1) -5(x-4)=8 find the value of x-5 whole 1/2​

Respuesta :

Annder
Annder Annder
  • 16-01-2021

Step-by-step explanation:

3(x-1) -5(x-4) = 8

3x-3 -5x+20 = 8

3x -5x -3 +20 = 8

-2x + 17 = 8

17 -8 = 2x

9 = 2x

2x = 9

x = 9/2

Answer Link
Aariyona
Aariyona Aariyona
  • 16-01-2021
Answer:

3(x-1)-5(x-4)=8

We move all terms to the left:

3(x-1)-5(x-4)-(8)=0

We multiply parentheses

3x-5x-3+20-8=0

We add all the numbers together, and all the variables

-2x+9=0

We move all terms containing x to the left, all other terms to the right

-2x=-9

x=-9/-2

x=4+1/2
Answer Link

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