
Equacions
Authored by Mates PA
Mathematics
8th Grade
Used 122+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quina x resol -3x = 9
6
12
-3
3
Answer explanation
El -3 multiplica, per tant es transposa dividint.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quina x resol -3x - 1 = 9 + 2x
2
-8
-2
8
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quina x resol 8x – 7 = 9 + 3· (x - 2)
2
-2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
-9
9
-2
1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El pare d'Ana és 5 anys més jove que sa mare i la meitat de l'edat d'aquesta és 23. Quina edat té el pare d'Ana?
11.5
23
46
42
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Quina equació equival al problema "Al sumar el seu doble, la seva meitat i 15, obtenim 99."
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Carmen té 16 anys i els seus dos germans en tenen 2 i 3. Quants anys cal que passen perquè el doble de la suma de las edats dels germans de Carmen sigui la mateixa que la seva?
5,2
9
2
18
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