n asked in Science & MathematicsMathematics · 1 decade ago

solve please -2x-3 is greater than or equal to 4x+7?

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  • 1 decade ago
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    -2x-3 > 4x+7 .... subtract 7 from both sides, you get...

    -2x-10 > 4x ..... then add 2x to both sides, and you get...

    -10 > 6x ...... multiply both sides by 1/6....

    -10/6 > x ..... flip it around and reduce....

    -5/3 > x OR x < -5/3

    x is less than or equal to -5/3

    You can double check your answer. Pick a number less than x, such as -2 (which is less that -5/3). Plug it in. You get...

    -2(-2) - 3 = 4-3 = 1

    4(-2) + 7 = -8+7 = -1

    and 1 is greater than -1, so it works!

  • 1 decade ago

    for each (>) sign remember the (equal to bar) underneath it

    -2x-3 > 4x+7 subtract 7

    -2x-10 > 4x add 2x

    -10 > 6x divide by 6

    -10/6 > x

    -5/3 > x

    so x is LESS THAN OR EQUAL to -5/3

  • 1 decade ago

    It depends on the value of x.

    If x greater or equal than 5/3 then -2x-3 is greater or equal than 4x+7

    You only have to solve as a regular equation, but take care of change the signs (+ / -) when multiply or divide by a negative number.

  • 1 decade ago

    -2x+(-3) >or 4x+7

    +2x equal +2x

    to

    -3 is greater than or equal to 6x+7

    -7 -7

    -10 is greater than or equal to 6x

    __ __

    6 _ 6

    1.6 is greater than or equal to x.

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  • 1 decade ago

    -2x - 3 >(or equal to) 4x + 7

    (breaks down to)

    6x+ 7 < -3

    (breaks down to)

    6x < -10

    (breaks down to)

    x < 5/3

    X equals neg 5 thirds.

  • 1 decade ago

    x is less than or equal to -5/3

  • Anonymous
    1 decade ago

    -2x-3 > 4x+7 .... subtract 7 from both sides, you get...

    -2x-10 > 4x ..... then add 2x to both sides, and you get...

    -10 > 6x ...... multiply both sides by 1/6....

    -10/6 > x ..... flip it around and reduce....

    x > -5/3

  • 1 decade ago

    i got x is greater than or equal to -5/3, but then again, i've kinda lost the algebra skills...

  • 1 decade ago

    -2x-3

    -2x=3

    x=-3/2

    x=-1.5

    4x+7

    4x=-7

    x=-7/4

    x=-1.75

    -2x-3 is bigger

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