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mumina1999

  • 2 years ago

Help me solve this 2(x + 2) − (x + 1) = 8

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  1. mumina1999
    • 2 years ago
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    i am confused a bit with this equation and i would like someone to explain to me how to solve this

  2. Nameless
    • 2 years ago
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    first you need to distribute the 2

  3. Nameless
    • 2 years ago
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    then distribute a -1 for the - sign in front of the other. then, combine like terms, isolate your variable and solve.

  4. Nameless
    • 2 years ago
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    so 2(x+2) = 2(x) + 2(2) for the first part

  5. Nameless
    • 2 years ago
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    the second you are going to do -1(x) and -1(1)

  6. Nameless
    • 2 years ago
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    so for the first part you should have 2x+4 right?

  7. Nameless
    • 2 years ago
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    so for the 2nd part ou should have -x - 1. put that all together and you have 2x+2-x-1=8

  8. Nameless
    • 2 years ago
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    now simplify by combining like terms .. thus x+1 = 8. then you need to move that 1 over to the other side by subtracting it from each side. so x+1-1=8-1 .. now you have x = 8-1

  9. mumina1999
    • 2 years ago
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    but wjere did u get the -1 from

  10. Nameless
    • 2 years ago
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    im sorry.. it should be + 1

  11. mumina1999
    • 2 years ago
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    o nevermind i got it because of the - sign infront before the x + 1 rifght?

  12. mumina1999
    • 2 years ago
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    o wat?

  13. Nameless
    • 2 years ago
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    yes it should be x = 8+1 since you have to add 1 to both sides.. my mistake

  14. math456
    • 2 years ago
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    so here you are looking for x!

  15. math456
    • 2 years ago
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    first multiply out the 2 with the stuff thats inside the brackets.

  16. Nameless
    • 2 years ago
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    and yes.. because of the minus sign. u distribute that as well

  17. math456
    • 2 years ago
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    2x+4-x-1=8

  18. Nameless
    • 2 years ago
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    good luck

  19. math456
    • 2 years ago
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    now you subtract! 2x-x+4-1=8

  20. math456
    • 2 years ago
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    here its x+3=8 not subtracy the 3 on both sides. you will get x=8-3 so the x=5

  21. mumina1999
    • 2 years ago
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    thank you both!!!!

  22. math456
    • 2 years ago
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    u r weclome :)

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