Ist diese Matheaufgabe falsch?

Wir haben diese Matheaufgabe bekommen:

28 – 4(9 – 3x) = -4x – (6 – 4x) * 4

Meiner Meinung nach ist die Falsch, weil ich dabei Ergebnisse wie 16 = 0 herausbekomme.

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Rhenane
1 year ago

If you get out after using your solution 16=0, then your solution is wrong, i.e. You were wrong somewhere: incorrectly combined, wrongly reshaped, calculated.

Ups – Correction:

In this case, the x’e actually lifts, and there is an untrue statement, i.e. here the amount of solution is the empty quantity, i.e. L={}.

So, you did everything right – you didn’t know how to start the result. :

Rhenane
1 year ago
Reply to  MrMixAlpak

|R means the sign for the real numbers: this is a fixed amount, i.e. |R={} would be a contradiction or a false statement. The amount of solution is usually given by an L; if the |R is in the position of the task, the range of numbers that may be considered for the amount of solution is therefore certainly meant.

If, for example, the valid number range |N, i.e. the natural numbers, and you have the only solution x=2.5 out, then also L={}, because 2.5 is not a natural number.

Halbrecht
1 year ago

although cumbersome (too long)et , but perfect

It’s surprising for you, but there are two special cases in such grease:
Number = 0 or even 0 = 0 as last line
That doesn’t mean you were wrong:

::: Number = 0
For :::: 0 = 0 infinite many solutions

You didn’t know that.

already in the second line (left +12 x ) (right -4x + 16x = +12x ) you can see that x disappears

TUrabbIT
1 year ago

-8+12x=-24+12x

Fact. The equation won’t open.

Uwe65527
1 year ago

Your bill is true, there is no solution.

Rubezahl2000
1 year ago

The equation has no solution.

Derkochi
1 year ago

Here the solution

Rhenane
1 year ago
Reply to  Derkochi

right is -4x+16x=12x, i.e. the x’e lift up, and -24+8=-16

Derkochi
1 year ago
Reply to  Derkochi

Ups I’ve made a mistake